Strength training built for runners
road and trail
Short, no-equipment sessions to become stronger, more stable, and more fatigue-resistant without compromising endurance.
RenfoRun is finally an app I can fully trust for my strength training program.
Stephane Jolivet.
French 10,000m Champion, 2h25 marathon
You run often, but your body is not ready to absorb the load.
Your training ally for road and trail
Short, effective sessions guided by video
Build fatigue resistance
Strength work designed to help you absorb effort better when fatigue sets in, late in a run or race.
Designed for running
No generic fitness: every session targets the real needs of runners.
Short, effective sessions
Easy to fit into your week, even when your running schedule is already full.
Simple to use
No complex setup. Start a session and train.
Keep the rhythm
Track your consistency and keep momentum week after week.
Clear cues for every exercise
Concrete key points help you perform each movement correctly and confidently.
Validated by science, optimized for runners.
Measurable benefits, backed by research
Sources: Saunders et al. 2006, Berryman et al. 2017, Lauersen et al. 2014
Runners who improve understand the science behind their training.
Strength training and running economy: scientific evidence
Discover how two weekly sessions can improve running economy by 2 to 8%.
Read article
Plyometrics: the secret to an elastic stride
Plyometrics can increase tendon stiffness and reduce stride energy cost.
Read article
Dynamic core stability: the foundation of a stable body
Functional core work improves stability and helps reduce injury risk.
Read article
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Available exercises
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Years of expertise
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Satisfied runners
💬 Customer testimonials
Why they cannot train without it
Road runners, trail runners, and athletes use RenfoRun to progress and reach their goals.
As a passionate runner, Renforun lets me hand off my physical preparation without overthinking it while staying effective. I enjoy it, and it is exactly what I needed: several sessions, little time required, and clear explanations.
Veronique A.
Trail runner - UTMB finisher
After years stuck around 3h30 in the marathon despite classic sessions, I discovered Renforun. Result: 3h14 in Rome, no collapse, and surprisingly good recovery. This strength method changes everything. The app adds real value to preparation.
Mathieu J-C.
Marathon runner
I always had knee pain, especially on long descents. After three months with Renforun, I can finally run 20 to 30 km trails without pain and without a knee brace. I have rediscovered the pleasure of running freely.
Charles L.
Trail runner - preparing first ultra
As a passionate runner, Renforun lets me hand off my physical preparation without overthinking it while staying effective. I enjoy it, and it is exactly what I needed: several sessions, little time required, and clear explanations.
Veronique A.
Trail runner - UTMB finisher
After years stuck around 3h30 in the marathon despite classic sessions, I discovered Renforun. Result: 3h14 in Rome, no collapse, and surprisingly good recovery. This strength method changes everything. The app adds real value to preparation.
Mathieu J-C.
Marathon runner
I always had knee pain, especially on long descents. After three months with Renforun, I can finally run 20 to 30 km trails without pain and without a knee brace. I have rediscovered the pleasure of running freely.
Charles L.
Trail runner - preparing first ultra
I have been running for ten years, but I always neglected strength work. Since using Renforun, I have less pain and more stability. It is not magic, just very well designed. I ran the 6000D and finished the Grand Raid de la Reunion without ever suffering muscularly, thanks to my three Renforun sessions per week.
Elodie B.
Trail runner - 6000D and Grand Raid Reunion finisher
Honestly, I did not think I would stay consistent. But with 15-20 minute sessions, I can finally keep at it. Result: more power uphill and less muscular fatigue.
Mat F.
Beginner trail runner
Renforun really helped me gain confidence on the trails. I feel stronger on descents and smoother on climbs. I no longer just endure my races, I enjoy them.
Cassandre B.
Passionate trail runner
I have been running for ten years, but I always neglected strength work. Since using Renforun, I have less pain and more stability. It is not magic, just very well designed. I ran the 6000D and finished the Grand Raid de la Reunion without ever suffering muscularly, thanks to my three Renforun sessions per week.
Elodie B.
Trail runner - 6000D and Grand Raid Reunion finisher
Honestly, I did not think I would stay consistent. But with 15-20 minute sessions, I can finally keep at it. Result: more power uphill and less muscular fatigue.
Mat F.
Beginner trail runner
Renforun really helped me gain confidence on the trails. I feel stronger on descents and smoother on climbs. I no longer just endure my races, I enjoy them.
Cassandre B.
Passionate trail runner
First marathon completed in 3h10 with only three running sessions per week and two Renforun sessions. I felt fresh until the end, no collapse. The sessions clearly made me stronger.
Jimmy D.
Amateur marathon runner - 3h10
3h15 in the marathon with only four runs per week, including two Renforun sessions. I held a steady pace from start to finish, and most importantly, I finished pain-free. It is the first time I have run that relaxed.
Jeremy S.
Amateur marathon runner - 3h15
Great app. The sessions are varied, the explanations are clear, and my legs feel much stronger than before. Even my stride has changed.
Karim B.
Road runner - 10K / half marathon
First marathon completed in 3h10 with only three running sessions per week and two Renforun sessions. I felt fresh until the end, no collapse. The sessions clearly made me stronger.
Jimmy D.
Amateur marathon runner - 3h10
3h15 in the marathon with only four runs per week, including two Renforun sessions. I held a steady pace from start to finish, and most importantly, I finished pain-free. It is the first time I have run that relaxed.
Jeremy S.
Amateur marathon runner - 3h15
Great app. The sessions are varied, the explanations are clear, and my legs feel much stronger than before. Even my stride has changed.
Karim B.
Road runner - 10K / half marathon
Become faster and more resilient.
Try free for 7 daysThen $5.99/month or $59.99/year.Equivalent to 2 months free with the annual plan