UCI MTB Marathon World Championships

The Mountain Bike Marathon World Championships in the heart of the Dolomites

In September 2026, the Primiero Valley, located in the municipality of Primiero San Martino di Castrozza in the province of Trento (Trentino-Alto Adige), will become the world capital of mountain bike marathon racing. The UCI MTB Marathon World Championships is the prestigious event that crowns the world champions in the marathon discipline—the toughest and most captivating form of off-road cycling, defined by long distances, grueling climbs, and technical descents through pristine nature.

A historic event: Elite and Master together

The 2026 edition makes history: for the first time, Elite and Master (Age Group) categories will compete on the same weekend and the same course. The Elite men's and women's races are scheduled for Saturday, September 12, 2026, while the Master world titles will be awarded on Sunday, September 13, 2026, with twelve jerseys up for grabs across different age groups. The start and finish lines are set in Fiera di Primiero, the valley's main town.

The course through the Pale di San Martino

The championship course measures approximately 87 kilometers with 3,530 meters of elevation gain, following the demanding route of the Mythos Primiero Dolomiti granfondo. From the start in Fiera di Primiero, riders will reach Lake Welsperg and Col dei Cistri, climbing toward Val di Roda and the scenic Prati Col, offering open views of Sass Maor and Cima della Madonna. The route then traverses Malga Ces, the trails of the Colbricon Bike Park, and the San Martino Bike Arena, tackling the steep ascents toward Malga Valcigolera and the Tognola Bike Arena before the spectacular final descents back to the valley floor.

More than just a race: a celebration of MTB

• Mythos Bike & Tech Expo, the exhibition area dedicated to brands and the latest innovations in the mountain biking world;
• The opening ceremony and the award ceremonies featuring the presentation of the world champion jerseys;
• Amateur races Mythos Primiero Dolomiti Marathon and Classic, open to enthusiasts who want to ride on the same terrain as the champions;
• Activities for families and children with the Mythos Junior Kids Bike.

A territory to experience

The backdrop is the Pale di San Martino, the UNESCO World Heritage Dolomite group that dominates the Primiero Valley and the resort of San Martino di Castrozza. Beyond the sport, the event is an opportunity to discover an authentic mountain landscape, filled with alpine huts, forests, bike parks, and trails—an ideal destination for lovers of cycling and alpine nature in Trentino.