Kairn
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Train your race
in your head,
not just in your legs.

The mental training app for runners. Visualization, focus and pacing — from 5K to marathon and trail.

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Free app, for now

4.9/5
App Store · 1,200 reviews
10,000+
Users
Kairn app preview — Meet Kai, your running mental coach
Expert-backed mental coaching

An AI coach, built with mental performance experts

Kai helps you train your mind with simple, guided exercises tailored to what you're going through.

His approach is grounded in the expertise of Camille Crouzet, psychologist and mental performance coach, and Dr Aymeric Guillot, neuroscientist specialized in mental imagery.

Their role: turn serious knowledge into concrete tools, accessible to everyone, directly inside the app.

Camille Crouzet

Camille Crouzet

Psychologist & mental coach

Dr Aymeric Guillot

Dr Aymeric Guillot

Neuroscientist — mental imagery

01 — The problem

On race day,
your mind can make all the difference.
Good news: it can be trained.

You followed your plan, ran your long runs, took care of recovery. And yet the night before, the doubts creep back. Your mind has rarely been trained the same way.

Kairn changes that: short, concrete sessions, built with sports mental coaches, designed to fit into your week like a real training session.

Runner in action: pre-race stress, fear of the wall, lack of confidence, drop in motivation, doubt about the goal, fear of failure
02 — Accessibility

Mental training shouldn't be reserved for elite athletes.

For a long time, training your mind meant having access to a sports psychologist, a coach or specialized support. Kairn makes these tools available to every runner with AI: pre-race stress, drop in motivation, fear of the wall, going out too fast, lack of confidence… you can get support at the right moment, with concrete exercises tailored to what you're going through.

Before

Yesterday
  • Mental training reserved for coached athletes
  • Occasional sessions with an expert
  • Tools hard to apply on your own
  • Support that's often out of reach

With Kairn

Today
  • A mental coach right in your pocket
  • Short, guided exercises
  • Answers tailored to what you need right now
  • Mental training accessible to every runner
03 — Needs

An AI mental coach that adapts to what you need.

Tell Kai what you're going through: pre-race stress, the urge to start too fast, fear of the wall, drop in motivation. Kairn guides you to the right exercise, at the right time.

Going out too fast01

Channel the adrenaline

Learn to lock in your pace when excitement rises.

Pre-race stress02

Come back to calm

Find clarity again before the start.

Half / Marathon03

Hold on when it gets hard

Prepare for the moments when your mind starts to crack.

Motivation04

Get out even when you don't feel like it

Find your drive again during the training weeks.

Trail runner alone facing the mountains at sunset
Mental coaching
5K, 10K, half, marathon, trail

Exercises built for the real moments of a race.

Whether you're preparing your first 5K or a tough trail, Kai helps you work the right mental lever at the right moment.

Explore mental coaching →
Runner on a track at sunrise, focused
04 — Visualization

Mental rehearsal.
Regulate the pressure.
Be ready on race day.

Visualization relies on mental imagery: you rehearse in images, sensations and intentions the key moments of your race — start, tough patch, final kilometer — so you can handle them better when they come.

Kairn guided audio
Session · 9 min
Visualize your 10K — past kilometer 7
Try a session →
Objectif Mental podcast guest in a green-toned studio

Kevin Rietsch

Cofounder of Kairn, Host Objectif Mental

▶05 — Objectif Mental podcast

The mind is also built outside running.

On Objectif Mental, I host mental coaches, athletes, coaches and neuroscientists to understand how anyone can grow, handle pressure and better prepare for the moments that matter.

Mental trainingSports psychologyNeuroscienceSport
Listen to the podcastWatch the episodes
80
episodes
10,000
monthly listens
5/5
Spotify
06 — Testimonials

They crossed their finish line.

“Really great. Even me, who struggles to let go, I caught myself smiling as I 'crossed' the finish line. Very interesting.”
Florence
“Perfect app for stressed or anxious people like me.”
Joy
“The guided visualization of the Paris Marathon let me enter the race mentally and feel the emotions and sensations in advance. I arrived with less stress, because my mind had already lived what my body was about to go through over 42.195 km.”
coursjulia
“I was really afraid of the wall on the marathon. Visualization really helped me run my marathon in 3h46.”
Lucille
“I love it! I love the coaching part! A really smooth experience and amazing conversations!”
Guillaume
07 — Experts

Built with world-class experts

We work with the best mental coaches. They design the content, train our AI and watch over the ethical care of the app.

Camille Crouzet

Camille Crouzet

Psychologist & mental coach. Olympique Lyonnais, French talent academies. Supports professional athletes and teams.

Aymeric Guillot

Aymeric Guillot

PhD in neuroscience. University Lyon 1, internationally recognized for his work on motor imagery.

Kairn · the app

Your next race
starts now.

Mobile app, free for now.

Download onApp Store
Get it onGoogle Play