OCC
OCC covers 60 km from Orsieres to Chamonix, delivering a sharp UTMB week mountain race with 3,500 meters of climbing and a fast 50K-final field.
Who won the 2026 OCC?
Frédéric Tranchand won the 2026 OCC in 5:10:08. Lauren Gregory was the first woman, 41st overall, in 6:08:07.
View 2026 results and finisher detailsQuick facts
- 50K final race in the UTMB World Series Finals.
- Point-to-point route from Orsieres to Chamonix.
- 60 km course with about 3,500 meters of climbing.
- Fast, technical mountain format rewards strong climbing and descending.
About the OCC
OCC is the Orsieres-Champex-Chamonix race in the UTMB Mont-Blanc week. It serves as the 50K final and brings a fast, technical mountain format to the same international stage as the longer UTMB races.
Course
The course starts in Orsieres and finishes in Chamonix after 60 km of alpine trail. The race lists 3,500 meters of climbing and a 14 hour 30 minute cutoff, making it short by UTMB-week standards but still demanding.
Race-day weather
Late August in the Valais and Mont-Blanc valleys can be mild, wet, or sharply colder at exposed points. The shorter distance favors speed, but weather and descent damage still matter.
Past OCC dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Thursday, August 27, 2026 | Completed | Open results |
| 2025 | Thursday, August 28, 2025 | Completed | Open results |
| 2024 | Thursday, August 29, 2024 | Completed | Open results |
Ran this race?
Share your race experience
Your firsthand experience can help future runners understand the course, logistics, and race-day atmosphere. A short report takes about two minutes.
OCC FAQ
When is the OCC?
We're waiting for the finalized date for the 2027 OCC. The most recent running was on Thursday, August 27, 2026.
Found an official update?Send race details or links
Send us confirmed dates, registration links, results, live tracking, or course changes. Include the source link so runners can reach the right information.