Cycling
Warm-up and soft-pedalling home drag every whole-ride number toward the middle. Helios reads the part of the ride you actually did the work in — and tells you what it cost.
78cited cycling workouts and 8 plans, scored as TSS from power.
What your coach sees
A Kalman state-space estimate over every ride with power, forecast day-by-day to your A race with a cone that widens honestly when the data thins. It shows you its own calibration — median bias, accuracy by lead time, filter health — instead of drawing a confident line.
Select any window and read its exact normalized power, IF, TSS, kJ and zone split — exact because the server ships the NP kernel, not an estimate. Zoom past the loaded resolution and it refetches that window at 1 Hz. W′bal, durability after 2,000 kJ, and per-interval detail come with it.
A grade-aware physics model solves your speed segment by segment, then lets you move FTP, weight, position and headwind and watch the finish time move. Save up to three riders to race your projection against.
Load is TSS computed from power — hours × IF² × 100 — so a hard hour and an easy three sit in the right places on the same curve.
Every new athlete gets set up by hand right now: real zones, a real plan, no template. Leave your email and you'll hear from us as spots open.
Every sport lands in the same week, on the same load picture, read by the same coach.