AI Endurance Coaching

A coach in your pocket. Built for every athlete.

Corsa builds a personalized weekly training plan for running, road cycling, mountain biking and triathlon — and explains every workout in plain language. Training for your first 5K? Is your 12-year-old starting NICA this season? Corsa adapts to both, with more conservative safety rules for young athletes built into the engine.

No credit card required 4 sports + youth mode $12.99 / month · $99 / year
Corsa workout detail with the plain-language ‘why this workout’ Corsa weekly plan view — calendar strip with durations and the week’s focus
What is Corsa

One coaching engine. Every endurance sport.

Corsa generates your weekly training plan with an AI agent grounded in a curated knowledge base of coach-approved workouts. The mobile and web apps adapt the interface to your level — beginners see effort, advanced athletes see power and pace.

🏃 Running 🚴 Road cycling 🚵 Mountain biking 🏁 Triathlon ⚡ Strength
What you get

Built so you actually train better

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A fresh plan every week

Your next week’s plan lands every Saturday morning so you can see what’s coming. The plan respects your schedule, sport mix, and goal.

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Plain-language “why”

Every workout explains what it builds and why it’s in your week. No jargon required — “Easy 45-min ride that builds your base without adding fatigue,” not “Z2 / 45.”

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Safety limits by athlete level

Hard caps on how fast training grows, how much of it is hard, and how often athletes rest — more conservative for young athletes. The AI writes each week’s plan; our code checks it against these limits before it reaches the athlete, and no setting turns them off.

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Adapts to real life

Skip a session, get sick, or change your week — tap “Adjust plan” and your plan rebuilds. Tell it why, and the AI uses that context.

Connects to your devices

Syncs with Apple Health and Strava so your real activities feed back into next week’s plan.

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Progressive disclosure

Just starting? You see Easy / Moderate / Hard. Experienced? You see HR zones, pace targets, and power. Same engine, different interface.

See it in action

Three screens that say it all

The plan, the “why,” and the rebuild flow — together in one app.

Corsa weekly plan view — calendar strip with durations and this week’s focus
Your week, with the “why”Every week opens with a plain-language summary of what it’s building — and a calendar that makes the load obvious at a glance.
Corsa adjust-plan modal — pick reasons and add a note
Adjust with contextTravel, illness, schedule change — pick the reasons and add a note. Your context goes straight into the regenerator.
Five-emoji effort feedback selector
Effort in faces, not numbersEvery athlete rates a workout on five faces, from 😴 to 🥵. For young and newer athletes, the workout itself is described the same way — how hard it should feel, not which heart-rate zone.
Youth athletes

Built for a 10-year-old’s first season and a junior racer’s best one.

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Youth beginners rest more

Young athletes new to training get at least two full rest days a week, a lighter recovery week after every three weeks of building, and never more than 10% more training than the week before.

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Effort, not numbers

Workouts are described by how they should feel — not pace or heart-rate targets — until an athlete is ready for them.

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Parents approve under-13s

Accounts for 7- to 12-year-olds stay locked until a parent verifies. Parents can review, pause or delete at any time.

See how Youth Mode works →

Try Corsa free for 7 days

Personalized plans for running, road cycling, mountain biking and triathlon. No credit card required. Cancel anytime.

Create your free account