AI running coach
Training plans that start with your life
Flex builds your running plan around your real constraints — not an ideal week you don’t have — and tells you the honest truth about what’s achievable.
Free to start — no credit card.
Starts with your week
We map your real availability first — your work, your sleep, your family — then build the plan. Not a generic 16-week template you'll abandon by week three.
Honest about your goal
If your target needs more than your schedule allows, we say so — and show you exactly what would change it. No false promises, no idealized fantasy.
Bends so you don't break
Travel, a rough night of sleep, a missed run — Flex adapts your plan to real life as it happens, so one bad week never derails the whole block.
How it works
- 1
Tell us your life
Your goal, your schedule, the constraints that are actually real for you.
- 2
We assess what’s achievable
An honest feasibility read — what fits, what’s a stretch, and what would close the gap.
- 3
Get a plan that fits
A periodized plan built around your week — and one that adapts as your week changes.