Coming Soon to iPhoneRun Smarter.
An AI coach connected directly to your running data. Get run analysis, race predictions, an adaptive schedule, and answers to anything you ask — from race strategy to training adjustments when life throws you a curveball.
Coming Soon to iPhoneThree steps to your personal running coach
Link your running data. Compatible with Garmin and Coros.
Miles reads every run — pace, heart rate, GPS, altitude, splits — and models your training in the background.
A timeline of analysis, plans, and conversation. Ask anything; it knows your last six months.
What's in the app.
A running coach available whenever you need it. Based on your running data, synced seamlessly as you train — no logging or manual entry.
An analysis after every run.
Splits, heart-rate zones, pacing, decoupling — deep analysis, plainly written.
Adjust the plan by asking.
Tell the coach about a missed run, a busy week, or a sore knee. It edits the schedule with you.
The pace you can hold for an hour.
Predicted continuously from your runs and race history. The basis for your lactate-threshold pace and heart-rate zones. Same model elite coaches use — without the lab visit.
Race times that move with your fitness.
Best-in-class accuracy from your own fitness curve, recomputed each week. Mile through marathon, with confidence bands.
No motivational filler. The kind of note a real coach writes after a hard workout.
Tuned for runners who need no extra motivation. Receive in-depth, actionable feedback on your training. Talk to it like a chatbot — but one that already knows your last six months of running.
Ten days out. Thursday's tempo was clean — 5 miles at marathon pace with HR sitting 6 bpm under threshold, exactly where we want it.
Tomorrow: 30 minutes very easy. Don't chase the pace. Start at 8:30/mi and let it drift if it wants to. Strides at the end if you feel sharp.
The training science, without the lab.
Miles is built on the same physiological models elite coaches and exercise scientists use — Critical Speed, W′ kinetics, threshold pace and HR zones, durability decay. We run them on your watch data continuously, then translate the numbers into something you can act on.