- Inputone phone clip
- Angleany
- Keypoints17 tracked
- Occlusionheld
- Cameraany position
- Resultunchanged
- Measured11 metrics
- Per phasenot averaged
- Outputone focus
- Volumeprescribed
Sprint biomechanics from a single phone video
See your stride.
Shape what’s next.
A phone clip from practice or race day is enough. No markers, no motion-capture suit, no controlled lab, and no calibrated camera position.
Guides for filming and reading a sprintMovement appears, frame by frame.
Stride follows the athlete and maps seventeen body keypoints through the full rep, even when the footage is busy with other runners.
The five phases of a sprintThe camera stops distorting the run.
Camera position stops changing the answer. The same run filmed from two different angles returns the same numbers.
How to film a sprint for analysisThe useful moments become visible.
Joint angles, stride phases and contact timing are measured against the phase of the run they belong to, each with a confidence level attached.
What Stride measuresAnalysis becomes the next session.
The result is translated into one clear focus, one drill, one cue, and the right amount of work. Not a dashboard of numbers to interpret on your own.
Stride for coachesNot more data. Better direction.
The best number is the one you can feel on your next rep.
Stride is an AI sprint biomechanics tool that reconstructs your joint angles, stride timing and ground contact from one phone video shot at any angle, returning eleven measured metrics in about fifteen seconds, with a coaching plan for your next session.
- Metrics measured
- 11
- Keypoints tracked
- 17
- Video to report
- ~15s
- Camera angles
- Any
Built around the athlete
More clarity for the work you already do.
Stride gives athletes and coaches a shared visual language: what happened, why it matters, and what to change next. Every measurement carries a confidence level, and Stride only turns results it trusts into coaching advice.
For coaches and teamsBuild front-side rhythm without reaching for the ground.
Common questions
Sprint video analysis, answered.
What app analyses sprint form from a video?
Stride analyses sprint form from a single phone video. It returns eleven measured biomechanical metrics, including ground contact time, flight time, hip extension and touchdown distance, along with one focus for the next session. It does not need markers, a motion-capture suit, or a particular camera position.
How do you measure ground contact time with a phone?
Ground contact time is the interval between the frame the foot first touches the ground and the frame it leaves. Measuring it by hand means stepping through video frame by frame and reading off the timestamps, which is why higher frame rates make it easier. Stride reports it automatically from an ordinary phone clip.
Do I need a 240fps camera for sprint video analysis?
Higher frame rates give finer temporal resolution, and research-grade contact-time work is commonly done at 240fps. Standard 60fps phone footage still produces usable results, with tighter confidence at higher frame rates.
Can you analyse sprint technique without a lab?
Yes. The measurements that matter most for sprint technique, contact and flight time, step length and frequency, touchdown distance, and joint angles at touchdown and toe-off, can all be derived from video. A laboratory adds force plates, which measure forces rather than the motion they produce. For technique work, video-derived kinematics are what coaches act on.
Does the camera angle need to be side-on?
Not for Stride. Many video analysis tools measure angles in the flat image, so a camera that is not perpendicular to the runner reports distorted joint angles. Stride accepts footage shot from any angle.
Is Stride available yet?
Stride is in private beta. Access is by request while it is being built with athletes and coaches.
Our approach
Progress is personal.
We’re building Stride around patience, precision, and the belief that better feedback should feel human rather than clinical.
Why we’re building StrideEarly access
Built forrunners finding their startdedicated amateurshigh school sprintersclub competitorscollegiate sprintersmasters athletessprint coachesstrength coachesphysiotherapiststeam sport athleteselite performers
One clear view of the work. Wherever you are in the pursuit.