Miles made
of more.
Not faster for a leaderboard. Not better for the feed.
Further.
Founding members get the first slots. No spam. No credit card.
Perseverance.
The plan holds even when you don't want it to. Every week that stacks is a week you can't lose.
Passion.
Distance running isn't a fitness category. It's a disposition. We build for people who mean it.
Persistence.
Consistency beats intensity. Built through consistency is not a tagline — it's the training model.
It doesn't just count your km.
It reads your run.
No hollow praise. No "great effort!". The coach tells you what the data says, names the error, and gives you the fix in the next sentence.
"Your aerobic engine is catching up with your ambition."
"That's not fitness regression — that's accumulated fatigue."
"Easy should feel almost embarrassingly slow. If it did, good."
Five signals. One number.
How long you hold together.
Most apps show what happened. GRIT measures whether your body held up during it — and tracks that number week over week to surface genuine adaptation, not just logged kilometers.
Same 18km route.
HR dropped from 156 to 148
in 3 weeks at identical pace.
That's not a good day. That's adaptation. GRIT compares every run to your own history on the same route, at the same effort, and names the trend in plain language — so you know when fitness is actually moving.
Recovery score, today's session brief, and how last week's load is landing — before you lace up.
Not a summary. A conversation. Your coach reads the run, names what happened, and tells you what to do next.
Adapts week-to-week from your recovery signals — HRV, sleep score, resting HR. A hard night means a softer tempo the next morning.
Every km split charted, three data-backed insights surfaced, and one actionable takeaway — all within seconds of stopping.
Recovery score, today's session brief, and how last week's load is landing — before you lace up.
Built different.
On purpose.
Not a garmin dashboard. Not a plan generator. A coach that reads your data, learns your body, and tells you what it means.
Durability model
Five signals — pace fade, HR drift, cadence decay, efficiency ratio, durability index — combine into one score that measures how well you hold together over long efforts.
Athlete memory
Every run links to every run. GRIT remembers the same 18km route six months ago and compares yours today — surfacing real progression, not noise.
Emotional calibration
The coach tone adapts to the day. A hard miss gets honesty, not hollow praise. A breakthrough gets weight. No generic "great effort!" for a bad race.
Data quality
Garmin, Apple Watch, or chest strap — GRIT sources the cleanest signal available. Running on a treadmill? Pace is estimated from cadence and stride length.
Adaptive plans
Weekly volume and session intensity recalculate from your recovery signals — HRV trend, sleep duration and score, resting HR, body battery, training readiness — plus the durability index. A bad night softens tomorrow's tempo. Chronically poor sleep stalls long-run progression.
Rescheduling
"Move Thursday's tempo to Friday" — the coach hears it, checks for conflicts with your long run and recovery needs, and rebuilds the week. No manual drag-and-drop.
Strava and Runna share your stats. GRIT shares your coach's words.
"You ran 18km in 1:39:24. 4th fastest on this segment."
"Great work! Your long run is complete. Rest day tomorrow."
"You went out 48 seconds too fast on km 1. You paid for it in the final 3km — HR climbed to 163 while pace faded to 5:52. Start 15 seconds slower. Same effort, fresher legs at 8K."
Miles made of more.
Founding members get the first slots. No spam. No noise. One email when we're ready.