Tudor has long had an eye for people who operate at the edge of what is possible. Diving legends, polar expeditions, Formula 1. Now the brand is expanding its collaborations again — this time toward a sport that rarely gets the spotlight, but where the athletes do things that are hard to grasp even with imagination.
Elite-level trail running is one of the world’s most extreme endurance sports. Yet few outside enthusiast circles know the names. That is exactly what makes this interesting.
Four runners, one shared mindset
Courtney Dauwalter, Miao Yao, Rémi Bonnet, and Baptiste Chassagne are all new Tudor ambassadors. What they have in common is not just the résumés — it is how they relate to pain, doubt, and impossible odds. They keep running when the body says stop. They seek out the hardest races they can find.
Courtney Dauwalter is probably the most dominant ultramarathon runner of modern times. In 2023 she completed a historic triple in a single season: victory in the Western States Endurance Run, the Hardrock 100, and the Ultra-Trail du Mont-Blanc. Three of the world’s toughest races. The same year. She often runs in basketball shorts and trusts feel more than detailed tactical plans — and beats the field anyway.
Miao Yao stepped onto the international stage at 21, taking the UTMB-CCC and the UTWT Annual Champion title in 2018. Since then she has kept moving seamlessly between road marathons and mountain ultras — and took back-to-back wins in the UTMB-OCC in 2024 and 2025. One of the most complete runners in the sport right now.
Rémi Bonnet is the man who runs up mountains faster than most people run on flat ground. The Swiss has taken several overall titles in the Golden Trail World Series, is a multiple world champion in the vertical kilometre, and has won the prestigious Zegama-Aizkorri. His weapon is an explosive climb few can match.
Baptiste Chassagne is the hottest name right now. The Frenchman placed second in the UTMB and then won the Diagonale des Fous in October 2025 — one of the absolute toughest races on the planet, 170 kilometres across the island of Réunion with 10,000 metres of climbing. A career in full acceleration.
Don’t miss: Tudor’s step into the sumo ring
This is far from Tudor’s only unexpected arena this year. Earlier we covered the brand’s partnership with Grand Sumo — a completely different world, but the same instinct for finding authentic environments where performance is everything.
A group that deserves more attention
There is something appealing about Tudor choosing to highlight precisely this group. Elite trail runners live a hard and obscure life compared with stars in more media-exposed sports. They run in darkness, in rain, on narrow ridgelines at 3,000 metres — and they do it because they cannot help themselves.
That is exactly the kind of person “Born to Dare” is meant for. Not someone who does extreme things to be seen, but someone who does them because it is the only thing that feels right.
Tudor has built a solid portfolio of collaborations with people who operate in the extremes — from motorsport-flavoured carbon chronographs to big-wave surfing in Nazaré — and the addition of the world elite in trail running feels genuine, not like a marketing move. It is a sport that deserves more attention. Tudor is giving it just that.
Who are Tudor’s new trail running ambassadors?
Courtney Dauwalter, Miao Yao, Rémi Bonnet, and Baptiste Chassagne — four of the world’s best trail and ultra runners.
What makes Courtney Dauwalter special?
In 2023 she became the first person to win the Western States 100, the Hardrock 100, and the UTMB in the same season — three of the world’s toughest ultramarathons.
How does this fit Tudor’s profile?
It extends the “Born to Dare” idea — Tudor has long partnered with people operating in extremes, from diving and polar expeditions to Formula 1, big-wave surfing, and sumo.
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