Gait-lab form analysis,
from one phone clip.
We measure your joints at initial contact, midstance, and toe-off — the way a clinical gait lab does — then hand you a scored report, freeze-frames, and the exact drills (or bike adjustments) to fix what's off.
Know exactly what to fix.
A 0-100 form score, per-stride joint angles, left/right symmetry, ground-contact time, and corrective drills — for running form and bike fit. Plans and Strava/Garmin/COROS sync included.
Analyze my runFirst analysis free · no credit card
Free. Unlimited athletes.
No per-athlete fees, ever. Roster, plan builder, in-app chat, Garmin/COROS workout push — and gait analysis built in for every athlete you coach.
Start coaching freeAlready have an account? Sign in · No credit card. No email needed to use the calculators.
The thing other apps can't do
Strava records what you did.
trnr shows you why.
Upload a side-view phone clip. We detect every stride and measure your joints at the moments clinicians freeze-frame — initial contact, midstance, toe-off — then score it 0-100 with annotated key frames, left/right symmetry, ground-contact time, and the drills to fix what's off. For cyclists: a dynamic bike fit with concrete adjustments, personalized to your bike and goals.
Running form
Every stride measured at contact, midstance & toe-off
Bike fit
Joint angles at every stroke phase → concrete adjustments
Free, no signup required
Tools every runner needs
Six free calculators and guides, available to anyone. Use them as much as you like.
Pace Calculator
Convert between pace, time, and distance across runs, bikes, and swims. Built-in race distance presets.
VDOT Calculator
Plug in a recent race time, get equivalent times at every distance plus your easy, tempo, interval, and repetition paces.
What to Wear
Live weather + body-feel + UV adjustments to dial in your kit. From base layers in 10°F to sun shirts in 90°F.
Training Plans
Free programs for 5K, marathon, triathlon, strength, cycling, and swimming. Hal Higdon, Pfitzinger, Hanson's and more.
Nutrition Planner
Build your race-day fueling plan with real-world gels, drinks, and chews. See carb and sodium totals at a glance.
Heart Rate Zones
Karvonen and %HRmax calculators plus a guide to what each zone actually does for your fitness.
With a free account
The full training stack
Sign up to save plans, sync your watch, log workouts, and track progress over time.
AI training plans
Tell us your goal race and current fitness. Get a personalized week-by-week plan that adapts as you train.
Stride analysis
Upload a side-view running video. We use pose estimation to grade your form and suggest corrective exercises.
Activity sync
Connect Strava, Garmin, COROS, or Apple HealthKit. Every run, ride, swim, and lift in one place.
Smart calendar
See your plan, your logged workouts, and your race countdown in one view. Reschedule by drag and drop.
Personal records
We watch your activities for PRs and milestones automatically. No spreadsheet required.
Progress charts
Fitness, fatigue, training load, aerobic decoupling. The metrics that actually tell you how training is going.
Routes & maps
Track your favorite loops, see elevation profiles, and discover new routes near you.
Community
Follow training partners, share workouts, and cheer each other on. Or keep it private — your call.
For coaches
Stop paying per athlete.
Most coaching platforms charge you for every athlete you add. trnr doesn't charge coaches at all.
trnr coach account — unlimited athletes, full toolset, forever.
TrainingPeaks base subscription — plus $9/mo for each premium athlete on your roster.
Built-in video gait analysis for every athlete you coach — no other platform has it.
TrainingPeaks pricing last verified June 2026.
Pricing
Start free, upgrade when you're ready
No credit card to get started. Cancel anytime.
See your form score
- 1 scored form analysis / month (run or bike fit)
- Gait-event report: contacts, angles, key frames
- 1 AI training plan / month
- Activity tracking + watch sync
Fix your form, week by week
- 8 form analyses / month — track your score as you re-test
- Bike-fit adjustments + form trends over time
- 4 AI plans / month + nutrition planning
- Everything in Free
For serious athletes
- Over 2× the Pro analysis allowance
- Priority video processing
- Top-tier AI plan allowance
- Everything in Pro
Ready to start training?
Create a free account and get a personalized plan in under a minute.