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 joining a youth mountain bike team 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.

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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.

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