18th December 2025

UTMB World Series 2025 : A season shaped by performance, inclusion and responsibility

Chamonix, 17 December 2025 — The 2025 UTMB World Series season has drawn to a close after a year defined byemotion, outstanding sporting performances and countless personal achievements. Now in its fourth year, the circuit has once again reaffirmed a clear ambition: to support the continued evolution of trail running while delivering a lasting positive contribution to host regions, improving accessibility for all participants and reducing environmental impact. UTMB World Series today shares its annual season review.

“The 2025 season reflects the shared energy that drives the UTMB World Series. Supported by our local teams, volunteers and partners, we continued to grow trail running by delivering exceptional experiences that bring people together, connect them with nature and support local communities. Over the course of the year, we also strengthened our environmental and social commitments. In 2026, we will build on this momentum, increasing our positive contribution to host regions and delivering trail running events that are increasingly authentic, sustainable and accessible,” said Frédéric Lénart, Chief Executive Officer, UTMB Group.

A global circuit rooted in local communities

Driven by organising teams deeply connected to their regions, the UTMB World Series brought together 146,933 runners in 2025 across 55 events, offering 266 races in 28 countries on five continents. Collectively, participants covered 8.9 million kilometres — equivalent to nearly 222 laps of the Earth — and accumulated 470 million meters of positive elevation gain, equivalent to 53,100 ascents of Mount Everest.

The circuit’s ambition to offer an accessible UTMB World Series experience close to home was clearly reflected in participation figures: 73% of registered runners came from the host country or neighbouring nations, including 58% from the organising country itself.

The circuit also continued to attract the sport’s top competitors. In 2025, 69% of athletes identifying as elites competed in at least one UTMB World Series race — an increase of 10 percentage points compared with 2024.

Building a more inclusive trail running community

UTMB World Series continued its commitment to making trail running a sport where everyone feels welcome and represented. From supporting women’s participation to improving accessibility for athletes with disabilities, initiatives rolled out throughout the season delivered tangible progress. As inclusion is a long-term journey, these efforts will continue in 2026, with the goal of removing remaining barriers and ensuring events are open to all.

Supporting women’s participation

In 2025, 44,563 women (+11,620 vs 2024) took part in a race on the circuit, accounting for 30% of participants (+1 percentage point vs 2024, +5 percentage points vs 2022).

Key initiatives included:

97% of events now provide feminine hygiene products and dedicated women’s facilities.
UTMB Live ensures equal coverage of the women’s and men’s race leaders, delivering balanced visibility.

These initiatives are delivered alongside key partners and stakeholders, including HOKA, the Renegade Collective, and associations such as Free to Run and GoFast.

In 2025, 105 athletes benefited from Adaptive status, representing a 100% increase compared with 2024. Participating for the second consecutive year at the HOKA UTMB Mont-Blanc, Team Adaptive, led by Team Manager Boris Ghirardi, illustrated this progress in action.

Their return was supported by a new mentoring programme, developed in partnership with leading elite athletes including François D’Haene, Blandine L’Hirondel and Sylvia Nordskar.

Taking action to reduce impact and protect the environment

Throughout the season, UTMB World Series events strengthened their commitment to social and environmental responsibility, built around three pillars: the environment, host regions and people. As an increasing number of events face significant weather-related challenges, initiatives tailored to local conditions were implemented and will be further reinforced in 2026 to maximise positive impact for host regions.

Two priority areas: mobility and waste management

Rethinking mobility — 90% of events implemented transport solutions to take runners to race starts. As the flagship event of the circuit, the HOKA UTMB Mont-Blanc placed responsible mobility at the heart of its strategy, introducing a new mobility policy and setting a target to reduce carbon emissions by 20% by 2030. Other notable examples include Nice Côte d’Azur by UTMB®, which deployed 60 shuttles and two trains through an €80,000 investment, providing transport for 88% of runners, while KAT100 by UTMB® promoted rail travel through dedicated fare reductions.

Less plastic, stronger local sourcing — 100% of events prioritised local suppliers (food, equipment hire and purchases), offered vegetarian options, and redistributed unused supplies to charities or event volunteers. 90% of events replaced plastic bottles with larger containers, avoiding the use of 400,000 bottles, while the ‘Bring Your Own Utensil’ initiative eliminated 900,000 disposable cups.

Beyond these priority areas of focus, UTMB World Series events also work in support of local communities. Numerous initiatives have been implemented to serve these communities, including free race bibs for local residents or young people, as well as the promotion of local cultures and traditional know-how.

More connected fans through UTMB Live

Throughout the season, UTMB Live continued its mission to bring trail running closer to a global audience, while showcasing the regions and communities that give each event its unique identity. On live.utmb.world, fans and newcomers alike can access comprehensive event data — with or without live streaming — including live runner tracking, results, rankings and key course information.

In 2025, 13 events were broadcast live (vs 8 in 2024), representing:

31 races streamed live
248 hours of live coverage (vs 165 hours in 2024)
23 million views (vs 16 million in 2024)
5 official broadcasters
9 local broadcasters