To train for a marathon.
Whatever your reason — Leo coaches around it.
Leo is an AI running coach that syncs your Strava, remembers every conversation, and gets sharper every week — for a growing community of runners.
Your plan, your chat with Leo, your sessions: the whole app, now on iOS and Android.



Leo pulls your workouts automatically. Read-only — he never posts or changes anything on your accounts.
From your first run to the finish line, Leo handles it all.

A plan that targets your goal, not a generic calendar. Re-tuned every week from your runs.

A plan that targets your goal, not a generic calendar. Re-tuned every week from your runs.
Leo analyzes 9 dimensions of how you train — endurance, speed, mountain sense, consistency, and more. From your real Strava data, he reveals your running character. Not a quiz. Not a choice. Who you actually are as a runner.

Wolf
Discipline

Mountain Goat
Mountain

Turtle
Endurance

Phoenix
Comeback

Hawk
Intensity

Bear
Cross-training

Fox
Cunning

Cheetah
Speed

Otter
Fun

Wolf
Discipline

Mountain Goat
Mountain

Turtle
Endurance

Phoenix
Comeback

Hawk
Intensity

Bear
Cross-training

Fox
Cunning

Cheetah
Speed

Otter
Fun

Wolf
Discipline

Phoenix
Comeback

Fox
Cunning

Mountain Goat
Mountain

Hawk
Intensity

Cheetah
Speed

Turtle
Endurance

Bear
Cross-training

Otter
Fun
3 stages per character. Train consistently, and yours will evolve.
Your character is your pack.
Leo isn't just about training plans. We're building a place where every kilometer has meaning — for you and your pack.
The pack toward Olympia
Goal: 5 000 km
Run wherever you want — every kilometer moves the Expedition forward. For every new runner who joins, a real tree is planted. Every waypoint reached unlocks something real.
Discover the Arena
Start
Iten, Kenya
Finish
Olympia, Greece

Most apps track numbers. Leo asks how your legs felt, how you slept, if that knee is still tight. He turns sensations into data — and data into decisions you can trust.
He monitors your training load week by week and speaks up before the breakdown does — not with jargon, but with "take tomorrow off."

Built on 200+ peer-reviewed papers — periodization, biomechanics, nutrition, physiology, altitude. Leo doesn't recite research: he applies it to your training. He remembers that your left calf acts up after heavy weeks, that you race better with a 3-day taper. A coach who reads the science and knows you.
Explore the research →Start for free. If Leo doesn't change the way you train, get a full refund within 14 days. No questions asked.
Start for freeFounding member: 9.99/mo for life · Cancel anytime
Built with runners. Your feedback feeds Leo every week.
Pauline
10K · Paris
June 7, 2026
50:05
I tell him how I actually feel, and the plan adjusts. No more guilt when I skip a session: Leo rebuilds the week around it.

.
................................................................................ ........................................................
Thibault
Paris Marathon
April 12, 2026
3h04
Leo spotted that my Thursdays were always flat and moved my hard sessions around. Everything clicked in the final block. Smashed my PB in Paris.

.
................................................................................ ........................................................
Marine
Paladru Trail · 55K
April 18, 2026
7h13
The climbing work was calibrated to my real Strava ascents, not generic hill repeats. On race day it felt like a course I already knew.

.
................................................................................ ........................................................
Victor
The Big Half · London
September 6, 2026
Goal 1h29
A coach who talks to me, remembers my knee and my work schedule. It's the first build-up where I don't feel alone with the plan.

.
................................................................................ ........................................................
Pauline
10K · Paris
June 7, 2026
50:05
I tell him how I actually feel, and the plan adjusts. No more guilt when I skip a session: Leo rebuilds the week around it.

.
................................................................................ ........................................................
Thibault
Paris Marathon
April 12, 2026
3h04
Leo spotted that my Thursdays were always flat and moved my hard sessions around. Everything clicked in the final block. Smashed my PB in Paris.

.
................................................................................ ........................................................
Marine
Paladru Trail · 55K
April 18, 2026
7h13
The climbing work was calibrated to my real Strava ascents, not generic hill repeats. On race day it felt like a course I already knew.

.
................................................................................ ........................................................
Victor
The Big Half · London
September 6, 2026
Goal 1h29
A coach who talks to me, remembers my knee and my work schedule. It's the first build-up where I don't feel alone with the plan.

.
................................................................................ ........................................................
Runner, creator or club? Become an ambassador
Start free. Move to coaching the day you want to go further.
AI Coaching
Most chosen14-day money-back guarantee, no commitment.
See all plansChatGPT gives you a generic plan based on a single conversation. Leo syncs with Strava, tracks your training load week after week, remembers your training history, monitors your shoe mileage, and adapts your plan based on how you actually feel — not just what you typed once.
The free version gives you a real training plan tailored to your goal — no credit card. Subscribing unlocks full coaching: a coach who talks with you, adjusts your week around your form and how you feel, tracks your shoe mileage, and sticks with you race after race.
Yes — Coach Leo is available on the App Store and Google Play. Leo also works in your browser, on Telegram, and syncs with your watch, so you get the same coach everywhere.
Leo works with ChatGPT, Claude, Mistral, and any MCP-compatible tool. You can also use the iOS and Android apps, chat with him on Telegram, or use the web app.
You connect Strava so Leo can sync your runs (read-only — he never posts or modifies anything). This is how he sees your pace, heart rate, elevation, and training patterns. Suunto sync is also available.
You start free, no credit card. If you subscribe and aren't convinced, you're fully refunded within 14 days — just email us. Cancel anytime in one click from your dashboard.
Your data is encrypted, never sold, and never shared. Leo reads your training data (Strava and Suunto) only to coach you — nothing else.
We're building pack-based challenges, weekly competitions between packs, and a progression system tied to your real training. Your character determines your pack — early members will be the first in.