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AI-powered training plans that adapt to how you feel — built around the science of running, not vibes. Read what the app does, see a real week, then download.
Plans calibrated to your fitness, not a generic template.
Tell us how you feel — the AI rewrites the week if needed.
Auto-import runs. Auto-match to planned workouts.
Age, weekly mileage, recent race times (or a typical training pace), and a goal race. A few minutes. No quizzes.
A VDOT score is derived from your race or pace data, then mapped to a fitness tier and pace zones for Easy, Marathon, Threshold, Interval, and Repetition work.
A periodized plan — base, build, peak, taper — is generated for your goal distance and target date. Workouts are picked from validated templates, not invented.
Sync Strava (or log manually). Tell the coach how you feel. If the week is too hard, too easy, or you missed a session, the plan rewrites itself around what actually happened.
“Your easy pace shouldn't be a guess. It should be math.”
VDOT is Jack Daniels' way of expressing running fitness as a single number. Plug in a recent race time — a 5K, 10K, half, or full — and we derive a VDOT, which gives us your training paces for every workout type.
No race? An average training pace works as a fallback. The plan starts where you are, not where a generic template assumes you are.
“You don't need a new plan. You need this week to make sense again.”
Tap “adapt” on any week and tell the coach what's up — flat tired, calf flared up, missed two days, traveling Friday. Claude rewrites the remaining workouts with that context, keeping the long-term arc intact.
Each rewrite is bounded: the periodization phase, your pace zones, and the goal race date are fixed guardrails the AI can't blow past.
“Match in green. Question marks where the AI wants more info. No noise.”
Connect Strava once. Every activity that comes in gets scored against the planned workout — distance, duration, average pace, and zone time. You see how close the actual run was to the prescription, with a short coaching note.
Manual logging works too, for treadmill days or runs you didn't track.
Build phase · week 6 of 16 · goal: sub-3:20 marathon · runner VDOT 48
“Tuesday's threshold landed clean — splits within 4 seconds of target. You're ahead on aerobic volume; if Friday's 800s feel sharp, hold pace and don't chase faster splits. The long run wants cumulative fatigue, not heroics.”
From your last 10K time.
The conversational zone.
Tempo / lactate pace.
Trending +4% vs last 4 weeks.
Base → Build → Peak → Taper.
Marathon · 16-week build.
On-plan adherence this week.
Last sync 14 min ago.
Open the app to generate your first plan, or join the list to hear when iOS lands.