Runners who stay healthy train more. Runners who train more run faster on race day.

Runizi is an AI running coach that reads your night, adapts today's session to your body, the weather and your calendar, and tells you why.

About a minute. Six questions, then your email.

What it does

A plan that bends instead of breaking.

Heatwave at six? A meeting dropped on your run slot? Runizi reshuffles the week around your calendar and the forecast, and keeps the thread of the training block.
It listens to how hard it felt.

Ten seconds after each run, you log how it felt. When your easy runs stop being easy, the plan adjusts before your legs force it to.
Your night decides your morning.

Sleep, HRV and resting heart rate from your watch become a readiness score and an injury-risk flag, every morning. Green, orange or red, with the two numbers that decided it.
Built on the coaches who wrote the book.

The periodisation is deterministic, taken from the methods of the best coaches in the sport: VDOT paces, 80/20 distribution, a down week every third or fourth week, never two hard days in a row. The AI adapts. It never invents the plan.

Every morning

Example brief · Tuesday 06:40 · six lines

Readiness: Orange · HRV 52 ms, baseline 61 · 5 h 40 of sleep
Today: Easy 50 min, zone 2. Keep it under 5:20 /km.
Why: Two short nights and HRV 15 % under baseline. The intervals move, they don't disappear.
Changed: Thursday intervals moved to Saturday. Long run stays Sunday, capped at 1 h 45.
Week: 48 km planned, 31 done. One hard session left.
Flag: Left calf mentioned twice this week. If it talks again, stop the run.

The whole coach fits in six lines. Read it in fifteen seconds, then go run. The data and the rules behind every line are one click away.

Works with

Runs and nights sync on their own, after every session and every sleep. Nights from Whoop and Oura too. No screenshots, no manual logging.

Waitlist

Step 01 / 07

What's your next race?

Not our specialty. Runizi is built around road races, 5K to marathon.

Questions

When does it launch?: Private beta over the coming months, in small batches from this list. Coros owners first, because nobody serves them yet. Then Garmin, Suunto, Polar and Apple Watch.
Is it a chatbot?: No. The plan comes from a rules engine. The AI only picks from a fixed menu of adjustments (keep, cut the volume, swap to easy, rest, move the session), and a rule checker validates every decision before you see it. It cannot hallucinate a marathon block.
What does it cost?: The beta is free. Waitlist members hear about pricing first.
What about my data?: Sleep and heart data are health data and we treat them that way. Everything you give us is exportable and deletable in one click, and never sold.
Does it replace a coach?: It replaces the spreadsheet, the screenshots pasted into ChatGPT, and the guesswork. A human coach who knows you is still better. Most of us don't have one.