6 Rules to Determine How Many Miles a Week to Run

Whether you’re planning to run a 5K, 10K, half marathon, or marathon, these rules will keep you fit and safe.

By  Ed Eyestone  TUESDAY, JULY 5, 2016, 4:38 PM

Once asked a colleague who has coached many runners to collegiateand Olympic glory what he considered the proper mileage totals to succeed in distances from the 5K to the marathon. “That’s easy,” he said. “You want to run as few miles as you can and still win.”

Runners too often get caught in the mileage trap, thinking more is better. The truth is, more mileage is better only up to the point where you can achieve your potential. After that, each additional mile only increases your injury risk. The following six rules informed the mileage ranges below and can help you find your magic number.

Rule 1: The longer the race, the higher the mileage.

Not surprisingly, a marathoner needs to run more than a 5K specialist.

Rule 2: Mileage requirements increase as performance goals increase.

If your goal is simply to finish a race, you can run fewer miles than if your goal is to finish with a fast time.

Rule 3: Some miles count more than others.

 When your weekly miles include tough track workouts, tempo runs, and short repeats, they’re harder to recover from than if you do the same volume of easy aerobic running. So when you add quality workouts, decrease your total mileage slightly to make up for the added stress.

Rule 4: Some miles count more than others (part two)

The farther away your miles are from race pace, the less they will help your racing performance. The principle of specificity means that you become good at what you practice. If you mostly run long, slow miles, you will become proficient at running long, slow miles. My ultramarathoner friends often go on four- and five-hour slow runs, which prepare them for 50-mile-plus races but do little for their ability to smoke a fast 5K.

Rule 5: Allow for adaptation when increasing mileage.

To avoid injury when upping your mileage, you need to take it slow and allow your body time to adapt to the increased workload. In general, you can add a mile for every run you do per week, provided you then run at least two weeks at the new level before advancing again. If you run four times a week, for example, you can up your weekly mileage by four miles. Then stay at that higher level for two weeks before adding another four.

Rule 6: A healthy runner beats an injured runner every time.

Rule 6: A healthy runner beats an injured runner every time.

I’ve applied my colleague’s theory of running the least amount of miles and still winning to one of my often-injured college athletes. High mileage totals do you no good if they put you on the sideline instead of the starting line.

Target Totals: 

So exactly how many more miles does a marathoner need to log per week than a 10K or 5K runner? Here are some suggested weekly totals by event for elites versus the rest of us:

		Miles Per Week
Runner	5K	10K	Half Marathon	Marathon
Elite:	70-80	80-100	100-110	100-140
Mortal:	20-25	25-30	30-40	30-50

How Slow Should My Long Runs Be?

There are a number of reasons you should dial back the pace for those longer outings.

By  Susan Paul TUESDAY, SEPTEMBER 15, 2015, 9:05 AM

Becky asks: I'm training for my first marathon and preparing to do my first 20 mile run in a couple weeks. My training schedule for this run says “long, slow run pace.” My question is why is this run slower than others, and just how much slower do I run?

The marathon is unlike any other distance we train for in running. Typically you would train to run farther than the race distance itself; for example, when training for a 10K, you may want to do some 10-mile runs.

When marathon training, your longest runs are usually in the 20 to 23 mile range. This is because these long miles cause a great deal of wear and tear on your body. The effort needed to run 26 miles is best saved for race day.

Not all of your training runs are designated as slow, as you noted. Some of your training runs should be at or close to your goal race pace, and some of your shorter runs may be faster than your goal race pace. The distance and purpose of a training run determines the appropriate pace.

Pace depends upon the design of you training plan as well, but typically, runs in the 12 to 16 mile range are run either at goal race pace or just slightly slower than goal race pace. Runs of 10 miles or less may be done at goal race pace to even faster than goal race pace. This variety of training paces benefits you in many ways because it recruits different muscle fibers, reduces injury risk, targets different energy sources, and results in providing a broader fitness base.

In this case, it's important to define "long." In marathon training, runs of 18 miles or more are usually considered long runs and run at a slower pace.

As I mentioned, slowing down for long runs reduces wear and tear on your body and; therefore, shortens your recovery time so you can continue on with your training. A slower pace also trains you to be able to pick up your legs and feet for the full 26.2 miles; this feat requires an impressive combination of muscular endurance, strength, and speed.

A slower run pace also helps train your body to rely more heavily on stored fat for fuel, thereby conserving your glycogen stores. Carbohydrate and fat supply the energy necessary for muscle contractions required for movement. The body burns a blend of fat and carbohydrate for fuel all of the time. However, the faster the pace, the higher the percentage of carbohydrate (glycogen) and the lower the percentage of fat that is used. Conversely, the slower the pace, the higher the percentage of stored fat is used and the lower the percentage of carbohydrate.

Long runs also develop your mental toughness and prepare your mind for the challenges of the marathon, which is more vital than you can imagine. Distance running is hard; you will experience some level of discomfort on these long runs. Your brain will tell you to stop and you may even develop aches or pains that mysteriously disappear when the run is over. This mysterious pain is the brain's way of trying to get you to stop. Long runs help your brain accept this discomfort and become comfortable with this "new normal." 

Weather is another factor to consider when deciding upon the pace for a long run. Training for the major fall marathons—Chicago, Marine Corps, New York—means long runs during tough summer months. When temperatures are in the 80s and humidity is 90 percent or more, doing a 20 miler is very difficult. Slowing down helps reduce the risk of heat illness. 

How much you should slow down on your long runs depends primarily upon your running distance background and the weather. Runners new to distance training should plan on slowing down approximately one minute per mile or more and, if the weather is warm, plan on slowing down even more than that.

The pace should be very comfortable and conversational. Use these long runs to focus on your hydration and nutrition strategies for the marathon and covering the miles rather than the pace. Once you have completed one or two marathons, then your training can become more focused on pace and you will be able to do long runs closer to your goal race pace.

The Friendship Musical Page

Recovery Run

By Matt Fitzgerald, Published Mar. 19, 2014

Recovery runs will do just as much to enhance your race performances as any other type of workout. 

Table of Contents:

Workout Of The Week: Recovery Runs
Practical Guidelines For Recovery Runs

Recovery runs don’t actually accelerate muscle recovery, but they do have other important benefits.

If you asked a stadium-size crowd of other runners to name the most important type of running workout, some would say tempo runs, others would say long runs, and still others would say intervals of one kind or another. None would mention recovery runs. Unless I happened to be in that stadium.

I won’t go quite so far as to say that recovery runs are more important than tempo runs, long runs, and intervals, but I do believe they are no less important. Why? Because recovery runs, if properly integrated into your training regimen, will do just as much to enhance your race performances as any other type of workout. Seriously.

RELATED: Improve Tomorrow’s Workout Today

It is widely assumed that the purpose of recovery runs—which we may define as relatively short, slow runs undertaken within a day after a harder run—is to facilitate recovery from preceding hard training. You hear coaches talk about how recovery runs increase blood flow to the legs, clearing away lactic acid, and so forth. The truth is that lactic acid levels return to normal within an hour after even the most brutal workouts. Nor does lactic acid cause muscle fatigue in the first place. Nor is there any evidence that the sort of light activity that a recovery run entails promotes muscle tissue repair, glycogen replenishment, or any other physiological response that actually is relevant to muscle recovery.

In short, recovery runs do not enhance recovery. The real benefit of recovery runs is that they allow you to find the optimal balance between the two factors that have the greatest effect on your fitness and performance: training stress and running volume. Here’s how:

Training stress is what your body experiences in workouts that test the present limits of your running fitness. You can be fairly sure a workout has delivered a training stress when it leaves you severely fatigued or completely exhausted. The two basic categories of workouts that deliver a training stress are high-intensity runs (intervals, tempo runs, hill repeats) and long runs. A training program whose objective is to prepare you for a peak race performance must feature plenty of “key workouts” that challenge your body’s capacity to resist the various causes of high-intensity fatigue (muscular acidosis, etc.) and long-duration fatigue (muscle tissue damage, etc). By exposing your body to fatigue and exhaustion, key workouts stimulate adaptations that enable you to resist fatigue better the next time.

Running volume, on the other hand, has a positive effect on running fitness and performance even in the absence of exhaustive key workouts. In other words, the more running you do (within the limit of what your body can handle before breaking down), the fitter you become, even if you never do any workouts that are especially taxing. The reason is that increases in running economy are very closely correlated with increases in running mileage. Research by Tim Noakes, M.D., and others suggests that while improvement in other performance-related factors such as VO2max ceases before a runner achieves his or her volume limit, running economy continues to improve as running mileage increases, all the way to the limit. For example, if the highest running volume your body can handle is 50 miles per week, you are all but certain to achieve greater running economy at 50 miles per week than at 40 miles per week, even though your VO2max may stop increasing at 40 miles.

You see, running is a bit like juggling. It is a motor skill that requires communication between your brain and your muscles. A great juggler has developed highly refined communication between his brain and muscles during the act of jugging, which enables him to juggle three plates with one hand while blindfolded. A well-trained runner has developed super-efficient communication between her brain and muscles during the act of running, allowing her to run at a high sustained speed with a remarkably low rate of energy expenditure. Sure, the improvements that a runner makes in neuromuscular coordination are less visible than those made by a juggler, but they are no less real.

For both the juggler and the runner, it is time spent simply practicing the relevant action that improves communication between the brain and the muscles. It’s not a matter of testing physiological limits, but of developing a skill through repetition. Thus, the juggler who juggles an hour a day will improve faster than the juggler who juggles five minutes a day, even if the former practices in a dozen separate five-minute sessions and therefore never gets tired. And the same is true for the runner.

Now, training stress—especially key workouts inflicting high-intensity fatigue—and running volume sort of work at cross-purposes. If you go for a bona fide training stress in every workout, you won’t be able to do a huge total amount of running before breaking down. By the same token, if you want to achieve the maximum volume of running, you have to keep the pace slow and avoid single long runs in favor of multiple short runs. But then you won’t get those big fitness boosts that only exhaustive runs can deliver. In other words, you can’t maximize training stress and running volume simultaneously. For the best results, you need to find the optimal balance between these two factors, and that’s where recovery runs come in.

By sprinkling your training regimen with relatively short, easy runs, you can achieve a higher total running volume than you could if you always ran hard. Yet because recovery runs are gentle enough not to create a need for additional recovery, they allow you to perform at a high level in your key workouts and therefore get the most out of them.

I believe that recovery runs also yield improvements in running economy by challenging the neuromuscular system to perform in a pre-fatigued state. Key workouts themselves deliver a training stress that stimulates positive fitness adaptations by forcing a runner to perform beyond the point of initial fatigue. As the motor units that are used preferentially when you run begin to fatigue, other motor units that are less often called upon must be recruited to take up the slack so the athlete can keep running. In general, “slow-twitch” muscle fibers are recruited first and then “fast-twitch” fibers become increasingly active as the slow-twitch fibers wear out. By encountering this challenge, your neuromuscular system is able to find new efficiencies that enable you to run more economically.

Recovery runs, I believe, achieve a similar effect in a slightly different way. In a key workout you experience fatigued running by starting fresh and running hard or far. In a recovery run you start fatigued from your last key workout and therefore experience a healthy dose of fatigued running without having to run hard or far. For this reason, although recovery runs are often referred to as “easy runs”, if they’re planned and executed properly they usually don’t feel very easy. Speaking from personal experience, while my recovery runs are the shortest and slowest runs I do, I still feel rather miserable in many of them because I am already fatigued when I start them. This miserable feeling is, I think, indicative of the fact that the run is accomplishing some real, productive work that will enhance my fitness perhaps almost as much as the key workout that preceded it. Viewed in this way, recovery runs become essentially a way of squeezing more out of your key workouts.

Practical Guidelines For Recovery Runs

Now that I’ve sold you on the benefits of recovery runs, let’s look at how to do them so that they most effectively serve their purpose of balancing training stress and running volume in your training. There are five specific guidelines I suggest you follow.

1. If you run fewer than five times a week, recovery runs are generally unnecessary. Recovery runs can only serve their purpose of balancing training stress with running volume if you run five or more times per week. If you run just three or four times per week, you’re better off going for a training stress in each run, or at least in three out of four.

2. Whenever you run again within 24 hours of completing a “key” workout (i.e., a workout that has left you severely fatigued or exhausted), the follow-up run should usually be a recovery run.

3. Do key workouts and recovery runs in a 1:1 ratio. There’s seldom a need to insert two easy runs between hard runs, and it’s seldom advisable to do two consecutive hard runs within 24 hours. A good schedule for runners who run six days a week is three key workouts alternating with three recovery runs, as in the following example:

Monday Tuesday Wednesday Thursday Friday Saturday Sunday

Off Key Workout (High Intensity) Recovery Run Key Workout (High Intensity) Recovery Run Key Workout (Long Duration) Recovery Run

Most elite runners who train twice a day do a hard run in the morning followed by a recovery run in the afternoon or a hard run in the afternoon followed by a recovery run the next morning. The frequency is twice that of the above example but the ratio of key workouts to recovery runs remains 1:1.

4. Recovery runs are largely unnecessary during base training, when most of your workouts are moderate in both intensity and duration. When you begin doing formal high-intensity workouts and exhaustive long runs, it’s time to begin doing recovery runs in a 1:1 ratio with these key workouts.

5. There are no absolute rules governing the appropriate duration and pace of recovery runs. A recovery run can be as long and fast as you want, provided it does not affect your performance in your next scheduled key workout (which is not particularly long or fast, in most cases). Indeed, because the purpose of recovery runs is to maximize running volume without sacrificing training stress, your recovery runs should generally be as long as you can make them short of affecting your next key workout. A little experimentation is needed to find the recovery run formula that works best for each individual runner.

6. Don’t be too proud to run very slowly in your recovery runs, as Kenya’s runners are famous for doing. Even very slow running counts as practice of the running stride that will yield improvements in your running economy, and running very slowly allows you to run longer (i.e. maximize volume) without sabotaging your next key workout.

Read more at http://running.competitor.com/2014/03/training/workout-of-the-week-recovery-run_11839/2#wCBXO5cFXs469P6D.99

A Pain in the Rear: High Hamstring Tendinitis

What it is and the exercises you can do to fix this frustrating injury.
By
Ian McMahan
Published
March 9, 2012

The hamstring muscles are responsible for propelling you forward, but high hamstring tendinitis can hinder your stride and be a real pain in the rear.

Get together with any group of runners and it's like a convention of orthopedic surgeons. Long, complex-sounding conditions are referred to and discussed at length. Treatment options, like night splints, orthotics and various braces are compared and suggested by injury veterans who have survived common running maladies such as plantar fasciitis and sore kneecaps.

There is one injury, however, that is spoken about in whispers, often since the inflicted runner no longer makes it to the group runs or track workouts. The condition is known in the medical jargon as proximal hamstring tendinopathy or high hamstring tendinitis and refers to inflammation of the common origin of the three hamstring muscles. To the rest of us it is quite literally a pain in the … rear.

Among its many functions, the hamstring complex is responsible for propelling your body forward with every step. The hamstring complex is actually composed of three separate muscles that share the same origin at the bottom of the pelvis but all attach to different areas after crossing behind the knee joint. If you were a car, your quads would be the springs and your hamstrings would be the engine. Needless to say, like the engine of a car, more miles frequently means greater chance of the engine breaking down. Despite both the potential seriousness of the injury and its prevalence among runners, it is largely ignored in the orthopedic literature, with much greater attention focused on traumatic injuries of the hamstring.

In one of the few articles that investigates high hamstring tendinopathy in a runner, Dr. Michael Fredericson notes that the basic anatomy and function of the hamstring muscle complex predisposes it to running injury. As the muscle is largely composed of "fast-twitch" Type II muscle fibers, capable of generating a high degree of tension on the tendon with every contraction, a great deal of tension is generated within the common tendon of the three muscles. Additionally, while running, the hamstring muscle contracts while in a stretched position as the leg strides out in front of the body. This forces the hamstring to begin contracting with the hamstring muscles and tendon already under significant tension from the stretch.

Functionally, the hamstring muscle complex has three basic roles with running: slowing the striding leg down as it approaches the ground; extending the hip and propulsion of the body forward; and assisting the calf muscle as it helps to move the knee.

After seeing literally thousands of patients over the past 12 years in sports physical therapy, one fact has become very apparent: high hamstring tendinitis is almost exclusively a runner's injury. In this it is unique, as "tennis elbow" is found equally in common mechanics and tennis players, and "jumper's knee," is not only suffered by basketball and volleyball players. High hamstring tendinopathy is also characterized by several other factors, some of which are critical to the initial diagnosis and subsequent management of the condition.

The predisposing factor for many runners can be a known or unidentified level of sciatic nerve irritation. This nerve irritation can be caused by lower back dysfunction, overstretching of the nerves in the leg or because of swelling in the area of the tendon. In addition to his findings described above, Fredericson observed the inclusion of nerve and lower back irritation with the presentation of hamstring dysfunction in an elite runner. The initial introduction of tendon pain is often preceded by a sometimes subtle level of low back discomfort and radiating tingling, numbness or pain in the back of the leg. This ensuing nerve irritation may weaken the hamstring muscle and leave the muscle and tendon vulnerable to injury.

Case Study:

Mary, a 45-year-old runner and triathlete, has been unable to train for the New York City Marathon because of a pain in the buttock and sit bone region. She works at a computer and frequently sits for six to eight hours a day. She will sometimes feel lower back pain that includes a sharp tingling down the back of her leg. She is able to run at a very slow place but cannot complete her long runs or perform any speed work due to pain at her sit bone.

As exhibited by Mary's case, the injury is characterized by a deep pain at the site of the ischial tuberosity or "sit bone." The condition begins with soreness after running but progresses to pain with activity and often soreness with the direct pressure of sitting. In most cases the pain comes on without any acute event but rather increases over time with continued running. As the runner can often have a history of lower back pain, the symptoms frequently include a radiating pain that crosses the knee, suggestive of nerve inflammation from the lower back. After a longer period of high hamstring injury, changes in running gait are sometimes apparent as the runner begins to "ride" over the leg and not use the hamstring complex to propel the body forward.

The three hamstring muscles (biceps femoris, semimembranosus, semitendinosus) have a common origin on the ischial tuberosity of the pelvis. This common tendon is subjected to a high degree of tension as the hamstring muscle group propels the body forward during running. This repetitive tension can lead to an overuse injury of the high hamstring tendon.

Treatment of the injury should initially address identification and treatment of any lower back involvement with a visit to an orthopedic surgeon or spine specialist. Once lower back pathology has been ruled out or treated, treatment of the high hamstring can begin. The important areas to address are strength of the hamstring, hip and leg, flexibility, and soft-tissue mobilization of the tendon and hamstring. Since running is an aggravating factor and is likely preventing the healing process from beginning, it is best to find other means of cardiovascular exercise.

Mary makes several ergonomic changes to address her lower back symptoms, including avoiding the slumped position, not sitting for longer than 15-20 minutes without a short standing break and temporarily avoiding hamstring stretching to allow the sciatic nerve to heal. Mary also begins an exercise program that emphasizes general leg strengthening and avoids direct hamstring exercise. She stops running and starts riding a stationary bike and swimming to cross train.

The purpose of the initial phase of the treatment process is focused on cross-training and general hip and leg strengthening (quad, calf, gluteal muscles, hip abductor). Special care should be taken early in the reconditioning process to avoid too much stress on the healing tendon. Direct hamstring work, as with a hamstring curl machine, can be aggravating to the tendon and should be avoided at this stage. Direct hamstring stretching should also be avoided or done cautiously to prevent overstretching an inflamed sciatic nerve or hamstring tendon.

After a reconditioning and healing period of six weeks, Mary no longer feels the same level of soreness at her high hamstring tendon. She is able to begin full weight-bearing training on the Stairmaster and elliptical trainer and adds direct hamstring strengthening exercise into her rehabilitation program. Mary also starts to stretch her hamstring and uses a foam cylinder to massage the hamstring muscle and tendon.

After this protective phase is completed, more specific hamstring work can begin, as detailed in the included exercise program. As a general criterion, once hamstring strength is nearly equal, a light running program can be initiated.

Prevention of hamstring problems mirror the later phases of the rehabilitation program. Those without any hamstring problems will benefit from maintaining or improving hamstring and leg strength and can incorporate direct hamstring work into the initial exercise program. All phases of exercises, as detailed in the exercise program, can be used. Another important factor in preventing high hamstring problems is avoiding excessive stress to the lower back. As in the case of Mary, being mindful of sitting ergonomics can help with those who sit for long periods of the day. The important factors are avoiding the slumped position when sitting and taking frequent sitting breaks.

The process of returning to running after an extended period of high hamstring injury can be a long one but can be done successfully with a patient and thorough reconditioning program. As with any injury, early intervention is the key to minimizing time away from running. Many studies have shown the importance of resistance training for endurance athletes, especially as they age.

Exercises:

These exercises are not meant to take the place of either an evaluation by a physician or a guided treatment program by a physical therapist. If any difficulties are experienced with the program, seek the guidance of a sports medicine professional.

Level 1 Exercises:

This initial level of exercise is focused on general hip and leg strength without specifically isolating the hamstring muscles. Cycling or swimming should be used for cardiovascular training. At this point, running should be stopped so that the hamstring tendon can begin to heal.

                                         Flat Bridge (Glute muscles)

• Tighten abs, lift hips off of floor and tighten glute muscles.
• Hold position, taking care not to lift too high and arch lower back.
• Hold for 30 seconds, then try 15 repetitions, lifting hips up and down as pictured below.
• Continue holds and repetitions until glutes are fully fatigued and are burning.
• 3-4 sets
• Can be performed with one leg for extra difficulty.

                                                              Leg Press (quadriceps) 

• Using 30-40 pounds, position foot and lower leg so that knee and foot are at the same height as pictured below.
• Keeping weight on heel of foot, press out and hold position
• Hold for 30 seconds, then try 15 small repetitions.
• Continue holds and repetitions until quad is fatigued and is burning.
• Do 3-4 sets with a short break between each.
• Side-lying Hip (Hip abductors)
• 10-15 repetitions in each of the below positions without stopping in between.
• Fatigue/burn should be felt in outside of hip.
• 3-4 sets.

                                                Foam Roll Hamstring Massage

Use foam roller to massage hamstring and tendon for 5-10 minutes.

Level 2 Exercises

This second level of exercise should be started when the hamstring tendon area becomes less sore to direct pressure and when the previous level of exercises can be performed without any significant discomfort. Cardiovascular training can be moved to the Stairmaster or elliptical.

                                             Hamstring Bridge (Hamstring muscles)

• Tighten abs, lift hips off of floor and tighten hamstring muscles by trying to pull heels toward hips.
• Hold position, taking care not to lift too high and arch lower back.
• Hold for 30 seconds, then try 15 repetitions, lifting hips up and down as pictured below.
• Continue holds and repetitions until hamstring muscles are fully fatigued and are burning.
• 3-4 sets.
• Can be performed with one leg for extra difficulty.

Squat (quads, glutes, hamstring)

• Squat down while reaching hips back.
• Weight should be on heels.
• Hold position slightly above 90 degrees for 20-30 seconds, then move up and down for 10 repetitions.
• 3-4 sets

Hamstring Stretch:

• Lie on back with stretching leg slightly bent at the knee.
• Point foot
• Bring leg back until a stretch is felt in the hamstrings, hold for 30 seconds.
• Stretch should not be felt in calf or foot.

Level 3 Exercises

This final level of exercise can begin when the hamstring-specific exercises of Level 2 do not elicit any soreness at the high hamstring area. Two to four weeks of the direct hamstring strengthening exercises of Level 2 should be finished before moving to Level 3.

Hamstring Curl (Hamstrings)

• Select a lighter weight so that a higher number of repetitions can be performed.
• Bar should be set at the end of the lower leg.
• 3-4 sets of 15

Treadmill Pull (Hamstring, glutes)

• Stand on the side of treadmill with the involved leg on the belt and the treadmill off.
• Keep opposite hip against side rail.
• Keeping foot flat and knee fully extended, pull belt backwards until heel begins to lift off of belt.
• 3-4 sets of 10-15.
• Additional resistance can be provided by having someone rest one foot on belt for extra friction.

Hamstring Squat (Hamstrings, quads, glutes)

• Squat down while reaching hips back, back should be parallel to floor.
• Weight should be on heels.
• Hold position slightly above 90 degrees for 20-30 seconds, then move up and down for 10 repetitions.
• 3-4 sets.

General Program Guidelines:

Exercises should be performed three to four days a week, with at least one day of rest in between.

After advancing to the next level of exercise, continue to do the previous levels

The goal of each exercise is to reach muscular fatigue and burn. After performing the exercises several times they should begin to get easier. In order to keep them challenging, add time and repetitions to each set as necessary.

Each exercise should be done to at least a moderate level of fatigue/burn and should be felt in the indicated muscle. It is common for an injured leg to fatigue/burn less than the uninjured leg, despite the fact that it is usually much weaker. After each exercise, fatigue should be experienced equally in both legs. Care should be taken to focus on using both legs evenly to ensure that the injured leg's muscles can be strengthened.

For those with the goal of establishing a program for injury prevention, perform Level 1 and 2 exercises for one to two weeks apiece before starting Level 3 exercises.

Ian McMahan is head athletic trainer at Active Care Physical Therapy in San Francisco and has worked with runners and endurance athletes of all ages and ability levels. He has a master's degree in exercise physiology from the University of Maryland. Since having to walk half of his first 5K in college, he has run five marathons, including two Boston Marathons.

Lisa Giannone is the founder of Active Care Physical Therapy in San Francisco and has worked with professional and elite athletes from all over the U.S. She is responsible for developing the exercise theory and technique of many of the exercises in the hamstring program.

Trail Running Tips

9 Trail Running Tips for Beginners 

By Marty Munson | For Active.com

If you want to go off-road running and enjoy the peace and quiet of the trails, hurry up;     it's about to get crowded out there.

With the weather getting warmer, more people are ditching the gym and heading outside for a run or hike.
Trail running benefits include new scenery, no car-exhaust and, if you want it, some extra-challenging terrain that can add a whole new energy to your running experience. But roadies are often surprised by how different off-road running is. Here's what to know before you head out:

More: 5 Reasons to Try Trail Running

YOU DISCOVER MUSCLES YOU NEVER KNEW YOU HAD

"Trails force you to use your body in a way that road running often doesn't," says movement specialist and elite triathlete Jessi Stensland

The uneven surface makes you engage your core and lateral stabilizing muscles, says Stensland, who also founded MovementU, nationwide workshops about movement efficiency, injury prevention and endurance performance.

More: 3 Best Core Exercises for Runners

THINK ABOUT YOUR FEET (AT FIRST)

"On the trail, you need to make decisions about foot placement more often and respond to the terrain quickly," Stensland says. "What facilitates that is a stable core."

It doesn't take long to get confident. "At first, you're worried about where to put your feet and you're worried about falling. Once you get more experienced, you're not going to stare at everything but you'll see it anyway," says Joe Prusaitis, ultrarunner, race director, and trail running coach for the Austin, Texas-based Tejas Trails.

"It's like driving a car: You're not concentrating on every little thing in front of you, but you're paying attention to it. As long as you keep scanning, you'll be fine."

More: 4 Tips for Safe Trail Running

YOU NEED TO START SLOWLY

"The road runner might be fit from running, but they're not fit for trail running," Prusaitis says. "Most road runners are used to the same foot plant every single strike and they don't realize

that on the trail, you land differently [each time]."

"The first few times out, you don't want to do a lot of mileage because it can trash you pretty good," he adds.

LEAVE EXTRA TIME

"On the road, you can take the shortest distance between two points," Prusaitis says. "But on the trail, you're looking for the path that requires the least amount of energy. That might mean you're taking switchbacks up the face of a mountain rather than climbing straight up a hill like you might on the road." Especially at first, plan on a trail run taking longer than the same distance on the road.

LOOK BACK

Part of the joy and challenge of trail running is planning a route. Lots of people go out on a trail and plan on turning around and coming back the same way. The problem? "Things look different when you're coming the other way," Prusaitis says. "Every time you turn on a trail, you need to turn around and look behind you so you'll recognize it when you're coming back."

More: Hitting the Trail


BRING SOMETHING TO DRINK

This is a must, even if you're just going out for a short time. Remember that you can't just stop at the local deli once on the trail.

CONSIDER A CAMERA

"On the trail, there's so much more to see than when you're on the road," says Stensland. "I often bring a camera. At one race, in particular, I shoved a camera in my sports bra at the last minute-that's something I never would have done in a road race. I didn't know just how epic the course would be-it finished atop Mt. Baldy outside of Los Angeles-and I was so stoked to have my camera to capture that memory."

More: iPhone Photography: Tips for Your Adventures


USE THE SHOES YOU LOVE

Off road running shoes are designed to protect you from rocks; they have more support on the bottom and bumpers on the front. But you don't have to buy them for the very first time you go off road, Prusaitis says. "You can wear the shoes you're already comfortable in. I think it's more important to have the right shoe for your foot than the right shoe for the terrain," he says. "If you're running on a manicured trail that doesn't have rocks or roots, you may not need trail shoes at all."

More: Choose the Right Trail Running Shoes

ENJOY YOUR STRENGTH

"I think trail running makes your legs stronger since you're usually either going uphill or downhill. And since you're doing a lot of jockeying around to position yourself, trail runners use their upper bodies more," Prusaitis says. Does this make you better on the roads? "I'm not sure it makes you run the roads better, but I think it makes you finish better. If you have a firmer core and a stronger upper body, these help you finish a race better when your legs start to tire than someone who doesn't have this strength."

More: 3 Reasons Strength Training Will Benefit Your Run

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