The Hoka UTMB Mont-Blanc has committed to cut its carbon emissions by 20 percent by 2030, using its 2024 carbon footprint as a baseline. To meet this objective, the event is implementing a four-pillar plan, developed in collaboration with Protect Our Winters (POW) and the Pro Trail Runners Association (PTRA) – commit, measure, reduce and offset:
- Commit: All stakeholders are called upon to pledge to its impact and respect the environment.
- Measure: The event’s carbon footprint will be measured and published annually, with the 2024 carbon audit conducted by Utopies consultancy providing a foundation for continued progress.
- Reduce and offset: Strong measures will be adopted to encourage sustainable mobility.
In 2026, the Hoka UTMB Mont-Blanc will indeed focus its efforts on transport, defined in a statement as “the single most significant area for improvement.” The objective is to encourage everyone to choose the lowest-carbon travel options, such as trains and buses, while reducing short-haul flights. From the 2026 edition, a dedicated tool will suggest the most carbon-efficient travel route for each runner based on their location. Those who follow the recommended route will receive a 30 percent bonus in the lottery draw for races requiring entry by selection (UTMB, CCC, OCC, etc.). The system will be tailored to the different travel realities in each country.
In 2025, Hoka UTMB Mont-Blanc launched UTMB GO, a dedicated platform to support sustainable travel to the event. UTMB GO will help participants plan their journey to the Mont-Blanc Valley and manage local travel with the lowest possible carbon impact. In addition, exclusive discounts in partnership with TGV Lyria and Alpy Transfers will encourage rail travel on the Paris–Geneva route and offer competitive prices for shuttle transfers to the Mont-Blanc Valley.
Since 2025, Hoka UTMB Mont-Blanc has implemented a carbon contribution initiative aimed at supporting emissions reduction and carbon sequestration projects. Nearly €25,000 — including €8,000 from runners — was raised through voluntary donations and organizational support. This funding enables EcoAct to support two agricultural transition projects, one in Haute-Savoie (France) and one in Brazil. In 2026, the organization plans to offset emissions related to event operations and travel by volunteers, guests and suppliers. All participants in the Hoka UTMB Mont-Blanc races, along with event partners, will also be required to contribute based on their individual carbon footprints.
