2020 Festival info coming soon!
New Format & Guest Speakers

3rd Annual FESTIVAL – August 21 to 23, 2020!



Fuel your mountain running with excitement, increase your everyday performance, gain valuable running & mountain skills, learn to reduce injury risks, interact with runners from around the globe and get inspired by elite athletes!

A quality and fun weekend!

Learn from professional athletes & coaches and high mountain guides!

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Chloë, Philippe and Kaz

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Jonathan, Tim and Vincent

Base camp at les Planards

Friday evening 18h30 – 21h00 /  Park Hotel Suisse & Spa
Intro & registration
Panel with Chloë and our Guest Speakers: Tim Tollefson, Vincent Delebarre and Jonathan Bracey.
Followed with Q&A
20:00 walk to Moö Bar for a social Apéro

Saturday 08H30 – 16h00 and night run
Social run with the Team!
Visit and presentation at the Chamonix Helicopter Base in les Bois, meet pilots & rescue team that do first hand mountain rescue, Q&A
Prehab exercises & land training drills
Running is technical! Q&A
Lunch at Planards restaurant
Workshop 1 & 2 : Chloë & Vincent
Workshops 3 & 4: Kaz & Jonathan
A bit of trail time
Injury Prevention & Taping Clinic
EVENING RUN: Skill-up with headlamps and poles, Black Diamond demo’s available

Sunday 09h00 – 13h00+ / Les Planards
Fueling & hydration for performance
Vertical session
Fun Relay Race and many surprises!
Lunch and closing party at les Planards
IMPORTANT: You do not need to attend the full fest to take part!

Running is technical!
Vertical training
High mountain skills for running at altitude, on glaciers and equipment needed
Fueling & hydration for performance and greater recovery
Prehab exercises & land training drills
Training and racing tips plus strategies to achieve your goals
Understanding running injuries, prevention and secret tips
Taping, and feet & ankle care
Training your ultra mindset, access your hidden potential
Using poles efficiently: when and how
Mountain rescue & safety with Pilots and rescue team of the Chamonix Gendarmerie Helicoptère

Hands-on learning with professional athletes, coaches and qualified mountain guides
Ten educational clinics to pick from
Apéro at Moö Bar Friday evening
Two Lunches at les Planards restaurant
Visit at the DZ Helico Gendarmerie de Chamonix in les Bois, meet pilots & rescue team
Ankle kit
Ton’s of secret tips
Great inspiration
… and a Goodie Bag!

Follow us on Instagram: @chx_mountainenduranceacademy

Find 2018 testimonials at the bottom of this page
For more info
  contact us !


CHLOE Lanthier, Festival Founder & Director
About Chloë
Chloë is an elite mountain endurance athlete and has been competing Trail & Ultra’s on an international platform for the past 3 decades. She is a former mountain bike world champion, and a keen ski mountaineer. She is a sport medicine consultant specializing in sport injuries, biomechanics and human performance. An author, speaker, coach, race director and the founder of the Chamonix Mountain Endurance Academy. Sharing her passion, experience and knowledge is an integral part of her life. Canadian she lives full time in Chamonix.


Kaz Moab 2018

KAZ Williams
Kaz moved to Chamonix in 2010 when her love for running in the mountains was born, during recent years she has raced in the Alps and America. Her most recent challenges have been Tahoe 200, Barkley Marathons, Moab 240, and Ouray 100. Kaz is part of Pyllon Racing a small team of determined, courageous and spirited trail runners. In her words: ‘Running challenges me. It has taught me so much about myself. To train hard. To be in the moment. To work at becoming your best self. Because if you don’t challenge yourself, you don’t know yourself.’


TIMCROPPEDTIM Tollefson  Elite Runner
Tim is a 2 time US Olympic Marathon trials qualifier with a 2:18:26 PB, 2 time USATF 50k Trail National Champion, Ultra Trail Australia Champion, has 2 consecutive 3rd place finishes at UTMB in 2016 & 2017, and just won the 2019 edition of Lavaredo Ultra-Trail 120km. He is a sport physical Therapist and lives in Mammoth Lake California. Tim is back to the festival for a second year and will be competing in this year UTMB. Why he loves the trail? ‘In a world that strives to maximize comfort, mountain running allows opportunity to explore and push the homeostatic norm. When you flirt with the fringe, you realize what it means to truly be alive.’


screen-shot-2019-06-02-at-4.45.24-pm.pngVINCENT Delebarre  Elite Runner & Coach / UIAGM High Mountain Guide
Vincent competed for three decades at an elite level from triathlon, cross-country skiing, multi-sport raid to mountain running. He has combine his passion for the mountains and endurance to become a qualified high mountain guide and sports coach. His most sentimental results are a 4th place at the Embrun Iron-Man triathlon, and winning the Great Templar race, Diagonale des fous and UTMB. He has completed over 200 trail races including fifty victories. Proud father of Luc 20, and Prune 17 years old.
o give oneself body and soul in the mountains makes me feel alive without any parasite of thought. There is also its steep environment that requires agility and therefore to beautiful sensations and the pleasure of mastering the terrain.’

Jonathan.Run.jpgJONATHAN Bracey, Elite Mountain Athlete & IFMGA High Mountain Guide
Jonathan is a qualified IFMGA High Mountain Guide based in Chamonix with his wife and two children, he works year round as a guide. He is a leading alpinist with many first ascents across the globe. Jon is a very talented mountain endurance athlete competing in the Pierra Menta and world championship of ski alpinism to winning the 40km Trail du Petit Saint Bernard in 2018 just to name a few. How does he do it all? ‘With a busy schedule my training is often very sporadic and far from ideal. However I love trying to maximize performance from minimal training, the secret is the biggest muscle in the body is the brain!’



PHILIPPE Sebah, Commander of the Chamonix Helicopter Base
Philippe has been the Commander of the Chamonix Helicopter Base for the past 7 years. He is also an instructor, has 7000 flight hours, a flight & mountain rescue specialist for 21 years. He has worked in Savoy, Haute-Savoie, Briançon, on the island of La Réunion and in countries such as Kazakhstan, Morocco, Jordan, Albania and Chile. He is a keen mountain biker and has been kickboxing for years (don’t get in his way!) Philippe and the rescue team are an integral part of the Chamonix community doing daily rescue in the Mont Blanc massif. He always has a big smile even after hard and long hours of flying, he is the James Bond of Chamonix!

GOLD Sponsors:

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SILVER Sponsors:




BRONZE Sponsors:

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Technical partners:

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Partnership in support:

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The FESTIVAL WOULD NOT BE POSSIBLE without the generous support of our friends, partners and sponsors, they give us the opportunity to offer a  quality, innovative and free event to the Chamonix community, a special thanks to you all!

‘Big Thank you to Chloë, Kaz and Tim for sharing with enthusiasm and smile a wealth of experience and running & nutritional advice but more so for organizing the festival that was so much fun and felt like everyone just bonded, it was special and just flowed! Thanks for a GREAT memorable time.
Matthew Allen UK

When you put together the experience of Chloë Lanthier and Tim Tollefson, an amazing energy is generated for all of us who enjoy trail running.’
Carlos Pastén / Solo running, Chili

‘Thank you Chloë for all your hard work in putting it together for us. It was an awesome festival, super educational experience. You are a superstar!’
Nancy Jiang New Zealand, 5th OCC / 2nd Mont Blanc Marathon Vertical

‘The weekend was so FUN, enriches the knowledge, connecting between different people all over the world with one but very BIG passion-running 🙂 Chloë is really professional and know how to explain and teach people.
Romen Aimaro Israel

‘Great job Chloë,  an amazing festival with great clinics, so much excellent information, and always with a smile.’

Dre Dillon USA

‘Chloë as a great delivery, very knowledgeable and a fun way of teaching! It was certainly educational which is what I like. Tim was very humble and approachable with very down to earth advice. I felt privileged to be there!’
Chris Wright

‘Thank you for putting together such a great trail running information day! I thought the mountain safety piece was really great – such a good reminder to all of us of what to do (and not do!). I’ll start implementing some of the drills you gave us when we get home!’
Emily Edwards

‘J’ai adoré le festival, j’ai appris beaucoup de choses et j’ai rencontré des gens super sympa. Merci c’était genial!’
Philippe Plantié Chamonix, President CMBM

‘From start to finish I enjoyed every moment and the order and timings were spot on. I can easily say that the weekend was rounded off with the best party I’ve attended, what made it special was the people; a love of trail running, the mountains and a willingness to learn. Thank you for taking the time and effort to put this event on.’
Paul Burton

‘Great weekend. And totally inspiring! Thank you!
David Collett

‘Thanks Chloe! It was a fun day and I learned loads. It’s made me want to get out and train more effectively and sign up for more races. You’ve given me back the joy of running that I’d kind of lost over the summer 🙂 Thanks again!

Claudia Campbell

‘Found the Friday eve presentations super interesting, inspiring and motivating, thank you so very much!’
Sebastien Gallie Geneva