L’s key takeaway: Strength train regularly, even when everything is going well: that’s exactly when you maintain your strength. Schedule your session after an easy run, never the day before a long run. Start without weights, work on pushing off for climbs and braking for descents, and if knee pain persists or gets worse, reduce the load and consult a healthcare professional.
In the mountains, your legs take on every climb and descent for hours, and you feel it the next day. Yet trail running strength training remains one of the most neglected parts of training. The question is what to work on, how often each week, and how to adapt your session to your needs. This article gives you a practical plan, with or without equipment.
Contents
- How many sessions per week, and when to schedule them
- Exercises that mimic trail footfalls
- A beginner bodyweight session
- An intermediate session for frequent runners
- Tailor your workout to your course
- When knee discomfort shows up during training
- Reduce your training load before the race, and know when to stop
- FAQ
How many sessions per week, and when to schedule them
Aim for two strength-training sessions per week during your training plan. As race day approaches, one session is enough to maintain your strength. Schedule it right after an easy run, or at least six hours before your run. Above all, avoid a hard leg workout the day before a long run or a key workout: your thighs will feel heavy. Before each session, do a running warm-up routine to wake up your muscles. The trap is skipping the session when everything is going well: that’s exactly when you maintain your strength.
Exercises that mimic trail footfalls
On a trail, each footfall lands on different ground, and the leg has to take the strain on its own. The following exercises recreate these challenges and prepare your muscles for real trail conditions.
Lunges and single-leg variations
Simple in appearance, the reverse lunge works one leg at a time. Keep your back straight, move your front knee forward without letting it go past your foot, then return to the starting position. On a trail, each footfall lands somewhere different, and the leg has to support you on its own: the lunge reproduces exactly this challenge and strengthens the lateral stability you need on uneven terrain.
Step-ups and climbing
Place one foot on a stable step and push through that leg, keeping your hips stable. Avoid pushing off with the foot that stays on the ground: the working leg should do the work. On trail steps, the back foot tends to compensate without you noticing, which makes the exercise less effective.
Single-leg deadlift and glute bridge
For the single-leg deadlift, keep your back straight and your supporting knee slightly bent. Hinge your torso forward, lift your other leg, then stand back up. For the glute bridge, keep your feet on the floor and lift your hips while squeezing your glutes. Too easy? Keep one foot raised. Start without weights: form always comes before resistance.
Calves and core
Add these exercises to your circuit for your core and calves:
- Calf raises, on both feet, then one leg.
- Plank, 15 to 60 seconds, two or three times.
- Dead bug: keep your lower back pressed to the floor, extend opposite arm and leg, then switch sides.
A beginner bodyweight session
To learn a movement, start without weights and do a few repetitions. Stick with the same exercise until your form is correct. Add repetitions first, and add weight only once you've mastered the movement. Don't skip this step, even if it seems easy. To take things further, learn how to improve your trail running.
A 10- to 15-minute circuit is enough to get started, with no equipment, alternating 30 seconds of effort and 30 seconds of rest.
| Criteria | Legs | Core | Upper body |
|---|---|---|---|
| Exercises | Squats, lunges, glute bridges, calf raises | Planks | A bodyweight arm exercise |
| Effort | 30 seconds | 30 seconds | 30 seconds |
| Rest | 30 seconds | 30 seconds | 30 seconds |
This minimalist format is enough to build a foundation. Add a set only when you can perform each movement with good form.
An intermediate session for frequent runners
Do you run three or four times a week? You can then move up to two strength sessions. An intermediate program can combine the Bulgarian split squat, step-up, and deadlift. If your balance isn't there yet, do these moves without weights: never add weight until your leg can hold the position without shaking.
For long descents, work deliberate braking into your runs and follow this routine:
- Lower your heel slowly over three seconds from a step.
- Two sets of six to eight reps per side.
- Hold onto a railing, and don't add weight while your leg is shaking.
Tailor your workout to your course
Not all courses work the same muscle groups. Adapting your strength training to your race profile means working on what really matters.
Courses with lots of climbing
When the course is mostly uphill, it's the push that moves you forward. Step-ups and squats train this movement: you push through your leg to lift your whole body. Squats, lunges, and deadlifts work your legs for both pushing and braking. To build up your climbing, see the 100 km trail training guide.
Long descents
On rough trails, your thighs start shaking quickly. Your quadriceps hold your body back as they lengthen, while your calves and ankles brake with every step. Add calf raises and slow step-downs. Start with the step-downs: that's when your thighs give out first.
Ultras and long-distance races
For an ultra, keep your strength training short and regular. Three rules to keep in mind:
- Take it easy after a hard race: your quadriceps stay weak for several days.
- If your legs feel heavy, shorten the workout or even skip it: it should never prevent you from going for your run.
- Increase your training load only when your training plan allows it.
When knee discomfort shows up during training
Knee discomfort won't go away by gritting your teeth. Stop running if the pain gets worse or becomes sharp, or if you limp to avoid it. Pain that persists or worsens within 24 hours after a run is a clear signal: reduce your training load. To find out what to ease up on during your week, see how to train for a trail race, then have a healthcare professional approve your exercises. Pain that hasn't gone away by the time you wake up shouldn't be pushed through on a downhill.
Reduce your training load before the race, and know when to stop
The last few days before race day and managing pain during a race are two times when many trail runners make mistakes. Here's how to avoid them.
The last few days before the race
When a race is coming up, the instinct is to want one last big session for reassurance. That’s a bad idea. For a road race, your last strength session should be four to five days before the start. For trail races, that timing doesn’t automatically apply to every distance. In the final days, reduce your training volume and avoid heavy weights. A light session is enough to maintain your strength. There’s no need to prove anything.
When pain means you need to stop
Sharp pain that gets worse or changes your stride is a signal to stop. Stop, even halfway through. Before you start running again, wait until you can run without compensating. If joint pain persists or gets worse the next day, reduce your training and seek medical advice if it doesn’t go away. For what to do next, see how to recover after a trail race. Never risk your knee for a medal.
Remember one thing: strength training is part of your preparation, not an extra you drop at the first sign of fatigue. Start without weights, add weight only when your form is correct, and choose three or four exercises to do after an easy run. Note how your legs feel the next day: that’s your best indicator. To complete your trail-running gear, check out the men’s shorts and men’s clothing designed to stand up to these workouts as well as the trails.
FAQ
Can strength training replace long trail runs?
No. Strength training prepares your muscles, but it doesn’t replace distance or terrain. A long run on hilly trails teaches your body to keep going over time. Include both in your program.
Do you need a gym to do strength training for trail running?
No. Squats, lunges, and planks are done using your body weight, in the living room or outdoors. You can add a dumbbell or kettlebell later, but only if you’ve already mastered the movements without weights.
How long does a strength-training session for trail running last?
A short circuit lasts 10 to 15 minutes. A more complete session lasts longer, depending on the number of exercises and sets. To start, stick to the short circuit, and add a set only when your form is correct.
Can you do strength training the day before a race?
No, not a heavy session. Avoid exercises that fatigue your legs, because starting with heavy thighs will cost you more than the session will have given you. Keep the day before for recovery, and follow your race plan to the letter.