AI coach · for endurance athletes
TRAIN
SMARTER.
RECOVER
SHARPER.
ZoneTwo reads your Strava history, thinks about you as one athlete across running, cycling, and swimming — and gives you honest, grounded-in-your-data coaching every week.
What it does
Every Sunday
Weekly review
A full read of your past 7 days: what went well, what's concerning, what to change next week — grounded in TSS, CTL, ATL, monotony, and the actual workouts you did.
Ask anything
Conversational coach
“Why was today so hard?” “Can I ride long tomorrow if I swam 4k today?” “How should I taper for next Sunday?” Answers cite your actual numbers, not generic advice.
Multi-sport
One athlete, three sports
Cycling + running + swimming share your body. We model them as one combined load — shared fatigue, monotony across disciplines, recovery implications. No competitor does this well.
How it works
Connect Strava
One OAuth click. No password, no credit card, no onboarding form. Disconnect any time.
We read 60 days
TSS, CTL/ATL, zone distribution, monotony, strain — computed from your real activities. No guessing.
You get a coach
Weekly reviews, a daily readiness score, and a chat that knows your training history. Adjusts as you train.
Built for
You, if…
- → Serious amateur, 25–50, training 4–10 h/week
- → Cyclist, runner, triathlete, or swimmer
- → Already using Strava daily
- → Have a goal: a race, a PR, or consistent fitness
- → Want more than a spreadsheet, less than a $300/mo coach
Not you, if…
- — Casual gym-goer or walker
- — Need a rigid 16-week training plan
- — Looking for nutrition or medical advice
- — Training under a live human coach already
- — Not on Strava
How we coach
Conservative by default
When data is ambiguous, we recommend rest over load. Getting injured is worse than missing a session.
Every claim cites your numbers
If we say “Saturday was hard”, we'll show you the NP, HR, and TSS that tell us so. No hand-wavy advice.
We know our limits
No medical diagnosis. No injury treatment. No disordered-eating territory. For those, we point you to a professional.
You own your data
Your Strava data stays on our servers. Delete your account and everything goes with it.
Ready to see your first review?
60 seconds to connect Strava. Your first weekly analysis lands immediately — no waiting for Sunday.