Film yourself side-on for 5 seconds. Drop the video. MyRunForm measures 5 key parameters of your technique and tells you exactly what to fix. No account, no upload.
Each measurement maps to a documented failure point in running biomechanics. We extract key frames, compute angles and tell you what to change — no jargon.
Angle of the support knee at ground contact. Too little transfers shock to the hip and back; too much wastes vertical energy.
Distance between your foot at contact and the vertical of your centre of gravity. Overstriding brakes every stride and multiplies shin and knee injuries.
Angle of the torso from vertical. The right amount drives you forward without loading the lower back.
Height of hip bounce between contacts. The less you bounce, the more energy goes forward.
How long your foot stays on the ground. Short contact = reactive, economical stride.
Derrick, T.R. (2004) · Medicine & Science in Sports & Exercise, 36(5), 832–837
Greater knee flexion at foot strike reduces peak vertical impact forces — the basis for our ≥ 15-20° target.
Read the study ↗Heiderscheit, B.C. et al. (2011) · Medicine & Science in Sports & Exercise, 43(2), 296–302
Increasing cadence (and reducing overstriding) lowers knee and hip joint loading at every footstrike.
Read the study ↗Carson, N.M. et al. (2024) · PLoS ONE, 19(5), e0302249
A moderate forward lean stays the most energy-efficient; leaning too far forward worsens running economy.
Read the study ↗No app to install, no sensor to wear. A smartphone, your browser, and 5 seconds of side-on running.
Place your phone at hip height, 3–4 metres away. Run past it. One take is enough.
Drag the file into the window. Analysis runs in your browser — the video never leaves your device.
5 measured values, a comparison to the optimal zone, and 3 priority corrections to work on tomorrow.
In local analysis, joint detection and angle computation run entirely in your browser via WebGL and WebAssembly. No image is transmitted, stored or hosted. You can even disconnect from the internet after the page loads.
No account, no tracking cookies. If you save or share an analysis, or choose the cloud option for more precision, the video is stored securely for 30 days and then automatically deleted.
The AI detects your body's key points frame by frame in your video, then computes 5 biomechanical angles and measurements: knee flexion, overstriding, trunk inclination, vertical oscillation and ground contact time.
Local analysis is free and runs entirely in your browser — instant result. Cloud analysis (€4.99, then unlimited for 24h) sends the video to a GPU server for more precise joint detection.
In local analysis, the video never leaves your browser. If you choose the cloud option, or save/share an analysis, the video is stored securely for 30 days and then automatically deleted.
A smartphone at hip height, 3-4 meters away, filming you side-on. No app or sensor to install.
5 seconds of filmed running is enough. Local analysis is instant; cloud analysis takes 30 to 90 seconds.
No — it's an objective measurement tool to spot what to work on, not a medical diagnosis. For pain or injury, see a healthcare professional.
Yes, a "Share" button on your report generates a unique link valid for 30 days, to send to whoever you want.

MyBikeFitting is the #1 online bike-fit platform in Europe, with tens of thousands of adjustments completed.
MyRunForm applies the same biomechanical rigour to running, with the same philosophy: a tool athletes can use themselves, anywhere.
No account, no download. Your next stride is better than your last.