UTMB 2026: Date, start time, how to watch and follow live

Vincent Bouillard bids for an historic double while Courtney Dauwalter and Ruth Croft headline the women's event

Four letters which need little introduction in the world of trail running.

UTMB is the centrepiece of UTMB Mont-Blanc week and the 100M final of the UTMB World Series, bringing many of the world’s greatest ultra-runners to Chamonix for one of the most coveted titles in the sport.

First held in 2003, the race takes competitors on an extraordinary lap around the Mont Blanc massif, crossing three countries – France, Italy and Switzerland – before returning to the famous finish line in the centre of Chamonix.

The fastest men will expect to complete that enormous loop in around 20 hours, while the leading women will be targeting somewhere around the 22-hour mark. But further back in the field the adventure can stretch across two nights, with the final cut-off coming 46 hours and 45 minutes after the start.

It is that combination of distance, climbing, high Alpine terrain and the constantly changing demands of racing through day and night which makes UTMB such a formidable test – and arguably the most famous 100-mile trail race in the world.

Follow live

The coverage starts at 17:15 local (CET) time on Friday 28th August 2025, with the race itself getting under way 30 minutes later at 17:45. That’s 16:45 in the UK and 11:45 Eastern Time.

Given the length of the race there are three different live streams on YouTube, which will cover it in its entirety – 1 | 2 | 3

The broadcast will be available in five languages (French, English, Spanish, Italian and Chinese) and brought to life by 15 commentators.

The live tracking and live results will all be available via this link.

UTMB

start list

Click here for the full start list and check out the analysis section below for our run through the leading contenders.

Notable runners

Route

UTMB starts and finishes in Chamonix, but what happens between those two visits to the famous French mountain town is what has made the race legendary.

The 2026 course covers 174km and features approximately 9,900 metres of climbing as runners make an anti-clockwise lap of the Mont Blanc massif through France, Italy and Switzerland.

After the spectacular start in Chamonix, the opening kilometres take the field towards Les Houches before the first significant climb and the descent to Saint-Gervais.

The route then heads through Les Contamines before the mountains begin to get significantly bigger. Runners climb through La Balme and towards the Col du Bonhomme and Croix du Bonhomme, before descending to Les Chapieux.

Another huge ascent follows towards the Col de la Seigne, where runners leave France behind and cross into Italy. From there they traverse the spectacular Italian side of the Mont Blanc massif, passing Lac Combal before eventually dropping into Courmayeur at around 83km.

Reaching Courmayeur might feel like a major landmark, but there is still more than half of the climbing challenge to negotiate.

The route heads back into the mountains above the Italian town before the long journey towards the Grand Col Ferret. At 2,537 metres, it is one of the highest points of the race and marks the border between Italy and Switzerland.

A long descent then takes the runners towards La Fouly, followed by the journey to Champex-Lac – another of the iconic UTMB checkpoints and one which comes at roughly 130km.

By now the race is deep into its decisive stages, but there are still major climbs and descents to negotiate through the Swiss section towards Trient.

The route eventually crosses back into France and reaches Vallorcine, but even there the climbing isn’t finished. Tired legs must tackle the final section towards La Flégère, high above Chamonix.

Only after that last major climb can runners begin the long-awaited descent into the valley and Chamonix, where one of the most famous finish lines in endurance sport awaits after 174km and almost 10,000 metres of climbing.

Analysis

Who are the men to watch at UTMB 2026?

The complexion of the men’s race has changed dramatically in the build-up to UTMB, with three of its biggest names now missing from the start line.

Four-time champion Kilian Jornet and 2023 winner Jim Walmsley have both been ruled out by knee problems, while defending champion Tom Evans had already confirmed he would not return to defend his crown.

But there is still a hugely competitive field heading to Chamonix – led by the man who won UTMB two years ago.

Vincent Bouillard produced a stunning breakthrough performance to triumph in 2024 and has since proved that was anything but a one-off. The Frenchman arrives back at UTMB after winning Western States earlier this summer and smashing the course record in the process.

Vincent Bouillard UTMB 2024 men champion finish line photo credit UTMB
Vincent Bouillard takes a famous win at UTMB in 2024 [Photo credit: UTMB]

Ben Dhiman is another obvious contender after finishing runner-up to Evans here 12 months ago, and his UTMB Index of 946 is now the highest in the men’s field.

American Caleb Olson isn’t far behind on 945, while Germany’s Hannes Namberger – a four-time Lavaredo winner – brings a wealth of experience and arrives with an Index of 941.

Britain still has a major contender despite the absence of Evans. Jonathan Albon, a former OCC and CCC winner, is one of the highest-rated runners remaining in the field and will now attempt to add the biggest race of UTMB week to his Chamonix CV.

And the depth extends much further. Chris Myers (USA), 2024 runner-up Baptiste Chassagne (FRA), last year’s third-place finisher Josh Wade (GBR), Andreas Reiterer (ITA) and American favourite Zach Miller are among a host of athletes capable of making an impact.

So while the loss of Jornet, Walmsley and Evans has removed three huge storylines, it may also have made the men’s race considerably harder to predict.

Who are the women to watch at UTMB 2026?

The women’s race brings together the last two UTMB champions as Courtney Dauwalter attempts to reclaim her crown from defending champion Ruth Croft.

Dauwalter had won on each of her first three UTMB appearances – in 2019, 2021 and 2023 – before that extraordinary sequence finally ended last year, when she struggled during the second half but battled on to finish 10th.

She returns in ominous form. The American won Hardrock 100 for a third time in July, setting a new clockwise-direction record of 26:03:10, just seven weeks before UTMB

Courtney Dauwalter Hardrock 100 2026 Sungod 1
Courtney Dauwalter at the finish line at Hardrock in 2026 [Photo credit: SunGod]

Croft was the athlete who took full advantage 12 months ago, producing a superb performance to claim her first UTMB victory and complete a unique Chamonix treble after previously winning both CCC and OCC.

The New Zealander has enjoyed another strong season, including victory at Tarawera Ultra-Trail by UTMB.

Ruth Croft wins her fourth T102 title at the Tarawera Ultra-Trail by UTMB. Photo - Graeme Murray
Ruth Croft celebrates her win at Tarawera in 2026 [Photo credit: Graeme Murray]

But there is plenty of quality beyond the two former champions.

France’s Blandine L’Hirondel, a former CCC winner and UTMB podium finisher, is one of the leading European contenders, while Fuzhao Xiang, Abby Hall and Riley Brady add further depth.

Lucy Bartholomew returns after finishing seventh last year, while Rachel Entrekin is another fascinating contender after her remarkable overall course-record performance at Cocodona earlier this season.

The most significant absentee remains Katie Schide. The 2022 and 2024 champion and UTMB course-record holder misses this year’s race as she continues to deal with the foot problems which have disrupted her season.

So once again all eyes will be on Dauwalter and Croft – but in a race of 174km and almost 10,000 metres of climbing, there is ample opportunity for somebody else to force their way into the biggest storyline of UTMB weekend.

Previous winners and course records

France’s Francois D’Haene and Spain’s Kilian Jornet are the most successful male runners in UTMB history with four wins apiece. Great Britain’s Lizzy Hawker is the most successful female runner, having won five times – in 2005, 2008, 2010, 2011 and 2012.

Jim Walmsley shattered the men’s course record in 2023 and Katie Schide did the same for the women’s one in 2024.

Past winners (since 2010)

2010 – Men: Jez Bragg (GBR) 10:30:37. Women: Lizzy Hawker (GBR) 11:47:30*

2011 – Men: Kilian Jornet (SPA) 20:36:43. Women: Lizzy Hawker (GBR) 25:02:00

2012 – Men: Francois D’Haene (FRA) 20:34:57. Women: Lizzy Hawker (GBR) 12:32:13*

2013 – Men: Xavier Thevenard (FRA) 21:09:15. Women: Rory Bosio (USA) 22:37:26

2014 – Men: Francois D’Haene (FRA) 20:11:44. Women: Rory Bosio (USA) 23:23:20

2015 – Men: Xavier Thevenard (FRA) 21:09:15. Women: Nathalie Mauclair (FRA) 25:15:40

2016 – Men: Ludovic Pommeret (FRA) 22:00:2. Women: Caroline Chaverot (FRA) 25:15:40

2017 – Men: Francois D’Haene (FRA) 19:01:54. Women: Núria Picas (SPA) 25:46:43*

2018 – Men: Xavier Thevenard (FRA) 20:44:16. Women: Francesca Canepa (ITA) 26:03:48

2019 – Men: Pau Capell (SPA) 20:19:07. Women: Courtney Dauwalter (USA) 24:34:26

2020 – Postponed due to Covid-19

2021 – Men: Francois D’Haene (FRA) 20:46:00. Women: Courtney Dauwalter (USA) 22:30:55

2022 – Men: Kilian Jornet (SPA) 19:49:30. Women: Katie Schide (USA) 23:15:12

2023 – Men: Jim Walmsley (USA) 19:37:43 Women: Courtney Dauwalter (USA) 23:29:14

2024 – Men: Vincent Bouillard (FRA) 19:54:23 Women: Katie Schide (USA) 22:09:31

2025 – Men: Tom Evans (GBR) 19:18:58 Women: Ruth Croft (NZL) 22:56:23*

* Courses altered due to poor weather

Past winners

2012
Claire Bannwarth
152:23:00

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Jonathan Turner
Written by
Jonathan Turner
Jonathan Turner is News Director for both TRI247 and RUN247, and is accustomed to big-name interviews, breaking news stories and providing unrivalled coverage for endurance sports.