UPCOMING EVENTS IN SEPTEMBER 2025
Paraty Brazil by UTMB®: trail running, Caiçara traditions and the Atlantic Forest
The 3rd edition of Paraty Brazil by UTMB® (September 18-21) will bring together more than 3,800 participants, including 42% women. The athletes involved, mainly Brazilians (73%) and South Americans (96%), will make Paraty Brazil by UTMB® a true celebration of regional trail running.
On the program, five races (100K, 50K, two 20K and one 7 km) will cross the Serra da Bocaina National Park, in the heart of the Atlantic Forest, offering participants a total immersion between tropical nature and cultural heritage.
But the event goes well beyond competition. With the Um Caiçara em Chamonix project, the organization is committed to discovering and supporting young talents from the Caiçara communities of Paraty, paving the way for them to a sporting career and transforming them into tomorrow's champions. At the same time, a partnership with women's collectives strengthens the position of women in trail running by removing specific obstacles to their practice, thanks to actions and activations planned throughout the weekend.
Environmental commitment is also at the heart of the event: contribution and trail maintenance actions are implemented to preserve the unique biome of the Atlantic forest and ensure sustainable practice. Paraty Brazil by UTMB® also promotes local employment, by recruiting staff from the region to strengthen community involvement, and highlights local producers by integrating their products into the aid stations.
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Wildstrubel by UTMB®: Youth and solidarity in the heart of the Swiss alps
The 4th edition of Wildstrubel by UTMB® (September 18-21) will bring together more than 6,500 participants. The event maintains a strong local presence, with 72% of participants coming from neighboring regions and 94% from the European continent. Female participation this year reached 26%. Five race formats are on the program (100M, 100K, 50K, 20K, and 10K), complemented by children's races, in a magnificent setting linking the cantons of Valais and Bern to the heart of the Wildstrubel massif.
The 2025 edition places a particular emphasis on youth and inclusion with the launch of Wild NextGen, a free race dedicated to young people, as well as a Next Gen Camp, a trail training camp held this summer. The event is also continuing its environmental and community commitment: a trail rehabilitation project, the involvement of 500 volunteers, and the sale of 100 charity bibs to raise funds to support four local associations.
On the sporting side, the elite field will be strong, with the presence of several leading European athletes. The 100M will feature Frenchwoman Claire Bannwarth (UTMB Index 702) and Spanishwoman Christopher Clemente Mora (UTMB Index 850). The 100K will feature German runner Léna Laukner (UTMB Index 738) and Frenchman Quentin Grateau (UTMB Index 855). In the 50K, Frenchwoman Émilie Bulle (UTMB Index 725) will be at the starting line, while Italian runner Martina Bilora (UTMB Index 705) and her compatriot Mattia Bertoncini (UTMB Index 874) will lead the 20K.
Three races – the Wild 110 (100M), the Wild 50 (50K) and the Wild 25 (20K) – will be broadcast live on UTMB Live.
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Grindstone Trail Running Festival™ by UTMB®: in the heart of the Appalachian and Shenandoah Valleys
The 3rd edition of the Grindstone Trail Running Festival™ by UTMB® (September 18-21) will bring together 1,200 runners, including 25% women and 79% Americans, for a now unmissable event on the East Coast of the United States. With four distances on the program (100M, 100K, 50K, and 20K), the event invites you to discover the landscapes of the Shenandoah Valley.
The courses cross the George Washington and Jefferson National Forests, offering technical and demanding terrain, alternating between peaks, ridges, and valleys. Recognized as one of the most challenging events on the East Coast, Grindstone Trail Running Festival by UTMB is also a unique opportunity to immerse yourself in the Appalachians, in the heart of unspoiled nature inhabited by a variety of wildlife, and stands out for being both a qualifier for the UTMB World Series circuit finals at the HOKA UTMB® Mont-Blanc and for the Western States 100-Mile Endurance Run.
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Julian Alps Trail Run by UTMB®: Slovenian alpine culture in the spotlight
The 5th edition of the Julian Alps Trail Run by UTMB®, 4th in the UTMB World Series (September 19-21), promises to be a landmark, with a record 4,700 participants, a 37% increase compared to 2024. Four of the six formats offered (100M, 100K, 50K, two races of 20K and 10K) are sold out. Female participation is also increasing, reaching 34% (+2 points compared to last year).
Among the notable stories is that of Aleš Svetina (SVN, UTMB Index 797), winner of the 100M in 2024, who started trail running in the 2019 edition with simple wooden poles. He returns this year to defend his title.
The organization relies on strong involvement of regional stakeholders, through partnerships with tourist offices, the mobilization of volunteer firefighters, alpine clubs, and mountain rescue units, not to mention cultural initiatives such as traditional dances and costumes at the starting lines. The event also incorporates a solidarity dimension, with donations going to local and social associations by implementing concrete initiatives supporting female participation: menstrual products available at aid stations, dedicated changing areas, and equal treatment for winners.
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Nice Côte d’Azur by UTMB®: When ultra-trailing showcases the Mercantour region and commitment
The 3rd edition of the Nice Côte d’Azur by UTMB® (September 25-28) will bring together nearly 6,300 runners, including 23% women (+2 points compared to 2024). The event, with its six races (100M, 100K, 50K, 20K, youth race, and night relay), attracts many French and European participants, with 76% French participants and 96% from the same continent.
On the sporting side, several renowned athletes are expected, including Marion Delespierre Mauppin (FRA, UTMB Index 755) and Paul Cornut-Chauvinc (FRA, UTMB Index 879) in the 100M, Anaïs Duval (FRA, UTMB Index 659) in the 100K, and Sophia Laukli (USA, UTMB Index 778) and Théo Detienne (FRA, UTMB Index 877) in the 50K. New for 2025: the 100K will cover a brand-new 40 km in the heart of the Mercantour region, offering runners an immersion in a pristine setting.
Beyond the competition, the event is strongly committed to the environment and society. Thanks to an ambitious mobility plan (60 shuttles and two trains), 88% of runners will be transported by bus, for an investment of over €80,000. The zero-plastic policy is being reinforced with the absence of disposable bottles, cups, and cutlery at all aid stations, and various trail rehabilitation projects will reinforce the initiatives carried out to benefit the region. Local and community involvement is also supported by 800 volunteers, as well as the creation of 15 solidarity bibs for two associations, supplemented by over 500 donations from runners.
Finally, the event will honor the place of women in trail running with the round table "Celebrating Women", which will give voice to sports players from all walks of life - volunteers, amateurs, elites and experts - in addition to the initiatives already in place. The live video broadcast on UTMB Live will allow spectators from all over the world to thrill to the 100M, the 100K and the 50K.
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Kaçkar by UTMB®: Between peaks above the clouds, Turkish heritage, and inspiring exploits
The first edition of Kaçkar by UTMB® (September 26-28) will bring together nearly 1,000 runners, including approximately 70% Turkish participants. The event is also distinguished by a significant female participation rate of 32%.
In the heart of the Kaçkar Mountains, Kaçkar by UTMB® will offer 20K, 50K, and 100K courses, inviting runners to traverse forests, valleys, and peaks. Along the way, they will discover iconic sites such as Zil Castle and historic stone bridges, before returning to the Ayder Plateau, the starting point, finish, and center of the event. Nicknamed "the place above the clouds" for their ridges overlooking a sea of mist, the Kaçkar Mountains will offer runners a total immersion in a unique ecosystem, where the athletic experience merges with the discovery of unspoiled and powerful nature.
On the athletic front, several renowned athletes are expected, including Philipp Ausserhofer (ITA, UTLMB Index 866), Daniel Jung (ITA, UTMB Index 855), Daniel Osanz (ESP, UTMB Index 886), and Sven Koch (GER, UTMB Index 850). But Kaçkar by UTMB® is above all highlighting inspiring stories. Among them will be Kadir Celik (TUR, UTMB Index 448), a deaf runner with experience in the UTMB®, and Doğa Karataş (TUR, UTMB Index 547), who was predicted never to walk again but overcame his injury to return to running. The presence of Fatima Painda, ambassador for Free to Run, an organization that promotes women's empowerment through running, will also give women a voice on the trail and beyond.
Beyond the competition, the event is committed to the environment. In partnership with the Turkish association İklim Dostu Derneği, the winners' trophies are made from recycled materials, highlighting the importance of sustainability.
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Ultra Trail Whistler™ by UTMB®: Running in the Footsteps of the Lil'wat and Squamish Communities
The 2nd edition of the Ultra Trail Whistler™ by UTMB®, from September 26 to 28, 2025, will bring together nearly 1,000 runners. True to its regional roots, the event attracts a very local audience: 51% of participants are from British Columbia, and the proportion of women reaches 33%.
More than a sporting challenge, the Ultra Trail Whistler™ by UTMB® becomes a true celebration, a tribute to local cultures, marked from the starting line by the presence of Lil’wat and Squamish representatives, a strong symbolic gesture that embodies the link between the trail community and these mountains steeped in history.
The courses, offering an exceptional mix of challenges and landscapes, crisscross exceptional alpine nature. Depending on the distances—100K, 50K, 25K and 10K—runners will start from Creekside Plaza, climb Whistler Mountain, then cross peaks, cross lakes, old-growth forests, alpine panoramas and verdant valleys. The 100K offers a UTMB® loop with all the most beautiful and challenging that Whistler has to offer.
Finally, the event is part of a global approach to inclusion, respect, and sustainability. This commitment is reflected in concrete initiatives: a webinar dedicated to women, hosted by race director Alyssa Reyes, provided an opportunity to share advice and experiences to promote better representation on the trails. The Ultra Trail Whistler™ by UTMB® is also committed to the environment, by promoting the wild beauty of the Coast Mountains and by being part of the UTMB Cares program, which supports local conservation and awareness projects.
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Malaysia Ultra-Trail™ by UTMB®: the breath of trail running in the heart of tropical forests
The 8th edition of the Malaysia Ultra-Trail by UTMB®, 2nd in the UTMB World Series, will welcome 2,600 participants. Female participation will reach 27% across the six races on the program (100K, 50K, 20K, 13K, 5K, and children's race). Among the inspiring stories is that of Bernadine Chin Lian Fah, 65, who will be starting the 50K to continue encouraging seniors to stay active through sport and trail running.
This 2025 edition features several new features: a new date moved forward by 8 weeks compared to previous editions to avoid the monsoons, a revised MY100 course** to be more accessible, a more panoramic and smoother MY50 course, as well as an adaptation of the start times offering better conditions on the course and a stronger atmosphere at the finish. A Team Challenge will strengthen team spirit, while a cultural performance will highlight the richness and diversity of Malaysian traditions.
Committed to a sustainable and inclusive approach, the event is continuing its Rimba UTMB – UTMB Forest project to replant trees, banning the use of single-use plastic, eliminating the use of bottles, and introducing shuttles to reduce its carbon footprint. Specific initiatives also support women in trail running, with hygiene kits distributed at certain aid stations, dedicated toilets, and the active participation of local clubs in the organization. Finally, waste management is reinforced by the installation of environmental signage and reusable race markers.
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