Evidence-based coaching, biomechanical analysis, and metabolic testing — for endurance athletes who want to understand their body, not just follow a plan.
A growing suite of tools and services built around the science of endurance performance — for athletes at every level.
Upload a running video and get instant biomechanical analysis across 7 key gait phases — skeleton overlay, joint angles, and plain-language coaching cues. Runs entirely in your browser. No signup required.
Open esFormLab →Personalized training built around your race goals, schedule, and physiology. Weekly check-ins, adaptive planning, and direct access to your coach — not a chatbot.
Open coaching dashboard →VO₂ max, lactate threshold, and fat oxidation testing to pinpoint your exact training zones — the foundation of intelligent, data-driven endurance training.
Notify me when available →Science-backed plans for 5K through ultramarathon, built with real periodization principles around your schedule — not generic templates repurposed from elsewhere.
Coming soon →Whether you want to analyze your own form or work directly with a coach, we have you covered.
Upload three short running videos and get an instant biomechanical report. The tool detects overstriding, hip drop, trunk lean issues, arm mechanics, and knee alignment — with specific, evidence-based coaching cues for anything it finds. No account needed. Nothing leaves your browser.
Analyze your running form →
Personalized training built around your goals, schedule, and physiology. Your coach builds and adapts your plan week by week, with direct access for questions and check-ins. Strava integration, race planning, and ongoing form analysis included — not a chatbot, not a template.
Learn more →No specialist equipment. No lab visit. A side-view running video and a browser is all you need.
Drop any side-view running clip — treadmill or outdoor track. MP4, MOV, or WebM. Your video never leaves your device and is never uploaded to a server.
The tool scans your video and identifies 7 key gait phases: left and right foot strike, left and right toe-off, mid-stance, peak knee flex, and terminal swing.
Each phase shows a skeleton overlay with angle arcs. Scrub frame by frame to get the best frame for each phase, with plain-language coaching guidance built in.
Trunk lean, knee angles, hip extension, arm swing, and foot strike position — compared across all 7 phases and graded against reference ranges from elite runners.
We build tools that translate lab-grade physiology into actionable insight — without requiring a lab, a team of scientists, or an elite contract.
Data without context is noise. Every number we surface comes with an explanation of what it means for your performance and how to act on it.
Physiology is individual. Reference ranges are starting points. The goal is to build a picture of your own body over time — not compare you to an abstract average.
Accessibility matters. Lab-grade analysis shouldn't require a lab. We're building tools that bring the science to any athlete, anywhere, at any level.
esFormLab is free to use. No signup, no upload, no data stored. Drop a video and see your gait in a new way.