The UTMB World Series is broadening its global footprint with two new events slated for 2027, tapping into surging trail running participation in Asia and North America. The additions—Hiroshima Ultra-Trail by UTMB in Japan and Ultra Trail Chattanooga by UTMB in the United States—are designed to deliver race experiences that are deeply embedded in local heritage and terrain.
According to UTMB International, the US trail running community now counts roughly 53,000 active runners, while Japan boasts over 30,000. Between 2025 and 2026, the number of runners holding a UTMB Index—the series' qualification metric—grew by 26% in the US and 11% in Japan, underscoring the sport's rapid expansion in both markets.
Hiroshima: a race through history
Scheduled for 9–11 April 2027, the Hiroshima Ultra-Trail by UTMB will offer three distances—100K, 50K, and 20K—winding through routes that include UNESCO World Heritage Sites such as the Hiroshima Peace Memorial and Itsukushima Shrine. Race director Mitsukuni Bunyu emphasized the event's cultural resonance: “More than just a race, Hiroshima Ultra-Trail by UTMB will be an experience that stays with you long after you cross the finish line.”
The choice of Hiroshima is strategic for the series, which has been expanding its Asian presence. The region's mix of coastal scenery, mountainous terrain, and historical landmarks provides a distinctive backdrop that could appeal to international trail runners seeking new challenges.
Chattanooga: community-driven ultra running
Ultra Trail Chattanooga, set for 4–6 June 2027, will also feature 100K, 50K, and 20K races, connecting the Tennessee city with the Appalachian Mountains. Race director Ginny Smith highlighted the local support network: “Ultra Trail Chattanooga is a true local effort driven by volunteers, nonprofit partners, land managers, businesses, and a community that always shows up.”
Chattanooga has become a hub for outdoor recreation in the southeastern US, and the event is expected to draw both regional and international participants. The course will traverse singletrack trails and offer views of the Tennessee River Gorge, adding to the series' reputation for scenic and challenging routes.
Both events are committed to environmental sustainability and community engagement, with initiatives such as trail maintenance programs and promotion of local produce. These efforts align with the UTMB World Series' broader goals of responsible event management and positive local impact.
Florian Lamblin, executive director of UTMB International, noted the distinct identities of the two races: “Both events have a strong identity, deeply rooted in their region.” This focus on authenticity is central to the series' strategy as it continues to grow its calendar across continents.
Priority registration for UTMB Index holders opens on 18 August, with general registration following on 20 August. Given the rapid growth in trail running participation, early interest is expected to be high.
For travel professionals, these events represent more than just athletic competitions—they are catalysts for destination tourism. Hiroshima and Chattanooga are likely to see increased visitor flows around race weekends, benefiting local hotels, restaurants, and tour operators. The UTMB World Series has a track record of driving significant economic impact in host regions, and these new additions are poised to do the same.
As the series expands, it also strengthens its position as a global platform for trail running, offering athletes a pathway from local qualifiers to the prestigious UTMB Mont-Blanc final. The inclusion of Japan and the US adds two major markets to the circuit, potentially boosting participation and viewership.
For those in the travel industry, the 2027 events could be a valuable addition to sports tourism portfolios. With the growing popularity of endurance sports and the appeal of unique cultural settings, Hiroshima and Chattanooga are set to become key stops on the international trail running calendar.
