# UTMB 2026: Lineup, Livestream Details, and How to Watch Trail Running's Premier Event
The Ultra-Trail du Mont-Blanc returns in 2026 with one of trail running's most anticipated lineups. The race draws elite ultramarathoners from around the world to tackle one of the sport's most demanding courses, a 171-kilometer loop through the Alps connecting France, Italy, and Switzerland.
Courtney Dauwalter headlines the women's field. The ultrarunner has established herself as the dominant force in long-distance trail racing, earning her recognition as the GOAT of women's ultramarathon running. Dauwalter's combination of speed, pacing strategy, and mountain expertise makes her the primary contender for the title. Her presence at UTMB signals serious intent to claim victory at one of trail running's most prestigious events.
The men's field remains similarly competitive. UTMB attracts top-tier ultrarunners who have earned spots through qualifying races or direct invitations. The 2026 roster includes proven finishers from previous editions and hungry challengers looking to break through at the sport's highest level.
UTMB's challenge extends beyond the 171 kilometers of technical terrain. The course presents nearly 10,000 meters of elevation gain spread across multiple days of racing. Runners navigate exposed ridges, steep descents into valleys, and high-altitude passes. Weather can shift rapidly. Mental fortitude becomes as important as aerobic capacity.
The 2026 event runs September 1-7, following UTMB's traditional late-summer schedule. Race organizers have confirmed livestream coverage for major checkpoints, bringing viewers into the action across multiple time zones. Runner's World and outside media partners will offer real-time updates, split analysis, and athlete interviews throughout the event.
For viewers, multiple platforms will carry the race. The official UTMB website streams key segments live. Television broadcasts will air in several countries. Social media channels provide checkpoint footage and athlete reactions. This multi-platform approach makes following the race accessible whether watching in real time or catching highlights later.
The field reflects trail running's global reach. European runners dominate the start list, particularly athletes from France, Switzerland, and the United Kingdom. North American competitors have grown their numbers in recent years. Athletes from Japan, Australia, and other regions round out an increasingly international competition.
Training for UTMB requires a different approach than road ultramarathons. Successful competitors log high vertical gain during training blocks. Vert training emphasizes hill repeats, long back-country runs, and technical footwork drills. Many UTMB contenders live near mountains and leverage local terrain. Pace work differs too. Trail ultras demand slower speeds than road equivalents, with power output managed across punishing terrain.
Nutrition strategy becomes critical at UTMB's distance and elevation. Runners must consume enough calories to maintain performance while managing digestive stress. Many top finishers rely on calorie-dense foods, electrolyte drinks, and strategic fueling at aid stations rather than constant eating throughout the race.
UTMB 2026 represents the pinnacle of trail ultramarathon racing. Dauwalter and other elite runners will face identical mountains and identical demands. The athlete who best manages pace, fuel, altitude, and weather over 171 kilometers will stand atop the podium in Chamonix.