Run more.
Get injured less.
FormStride builds your training plan around your injury history, current fitness, and running form — so you train hard without breaking down.
Start with a beginner running training plan or build from where you are today. Our AI running coach combines a runner health assessment with adaptive training, running injury prevention, and optional guidance on proper running form, including overstride.
Takes around 3 minutes.
Want to learn first? Read our injury-prevention guides → or browse the running glossary.
Try the free running cadence calculator or read the injury prevention guide.
Common injuries we help prevent
Here's how it works
Start with your health history. Form analysis is optional — an enhancement, not the gate.
1. Tell us about you
Share your weekly mileage, goals, injury history, and current fitness. Takes around 3 minutes.
2. Get your training plan
Built around your body, not a generic template. Your plan adapts as you train and log how your body responds.
3. (Optional) Add a form video
Upload a short clip to let our AI catch mechanical issues and fine-tune your plan. The analysis sharpens your training — it doesn't gate it.
Training plans that actually fit your body
Training plans fail runners in two ways — they ignore injury history, or they ignore how you actually move. FormStride does neither.
Personalized to your health
Built around your injury history and fitness level — not just your PR goals.
Adapts as you train
Your plan updates based on how your body responds week to week.
Form analysis when you want it
Add a video at any time for an extra layer of mechanical insight. Never required.
FormStride is coming to mobile
We're building a dedicated mobile app to make healthier training easier to follow wherever you run. Your personalized plan, daily guidance, and form insights will be right there with you.
The web app is available today. Mobile is on the way.
What the form analysis layer looks like
Add a 10-second side-on clip at any point and get a full biomechanics breakdown — instantly, in your browser.
Risk score
Moderate62/100
Top flag: mild overstride (8 cm) — shin-splint risk
AI coaching
Fix: Increase cadence to 170–175 spm
Your cadence of 163 spm sits below the healthy range. A higher turnover shortens your stride and reduces impact forces — the fastest fix for shin-splint risk.
Drill: A-skip (3 × 20 m, twice a week)
Trains the hip flexors and reinforces a compact stride. Your overstride of 8 cm should drop within 2–3 weeks of consistent A-skips.
Watch: Left-right symmetry in arm swing
Arm swing looks good at 88% symmetry — maintain this as you work on cadence so you don't compensate with your upper body.
Free account
Your video stays on your phone.
All pose detection runs locally in your browser using TensorFlow.js. Only the computed numbers and a single still frame are saved to your account — never the video.
Backed by real biomechanics
When you add a form video, we measure the metrics that matter and translate them into plan adjustments you can actually use. The science is here when you want it; your plan stays simple.
Unfamiliar with a term? See the glossary →