Kosh: AI Running Coach & Plans

Most training plans assume you'll never miss a run, never have a bad night's sleep, and never train through a heat wave. Kosh builds plans that understand you're human. Train with plans that adapt to your circumstances.

Pick your race: 1-mile, 5K, 10K, half, or marathon, or just tell Kosh you want to get faster. It builds your plan, then rebuilds it every day around the life you actually live.

Plans that adapt with you:

- You can miss a run and your weekly plan rewires to adapt with you. No stress, no broken plan.
- Kosh reads heart-rate variability, resting heart rate, and sleep from Apple Health to compute your daily Reserve (how much you have to spend today).
- Hot, humid morning? Tough headwinds? Kosh checks the weather and adjusts your paces before you're out the door.

A coach's read, every morning:

Each day Kosh writes you a short note: what today's run is for, what yesterday changed, what to watch. Each week, it reviews the whole plan. And when you want a human, Talk to Jehan, a real running expert who reads your training and answers.

Built for first-timers, and advanced runners:

Never raced before? Kosh starts where you are and gets you to the line. Chasing a personal best? Training paces are set from your recent results and tightened as you improve.

Your crew:

Add friends, see their runs, send a cheer or a popper on race day. Your runs are visible only to friends you accept.

A season you can see:

Watch training take shape week by week: mileage, workouts, milestones, and awards as your season builds.

Works with:

Apple Health (runs sync automatically), Apple Weather, and wearables like Whoop, Garmin, Coros, or Polar watches for recovery data.

Kosh is free to use, with no subscription, no ads, and no tracking.

Lace up. Your first run is ready to be run tonight!