Sierre-Zinal, widely regarded as the most iconic mountain race on the calendar, returns to Switzerland's Valais Alps on 8 August for its 53rd edition. The 31km course climbs roughly 2,200 metres from the town of Sierre up to Zinal, passing within sight of five peaks above 4,000 metres along the way, and once again draws around a hundred of the world's best mountain runners to a route that has barely changed in half a century.
Kilian Jornet heads into the race as the man to beat, having already won Sierre-Zinal a record six times and set the men's course record of 2:25:34 in 2024. The Spanish-based Norwegian-Catalan star has spoken of Sierre-Zinal as one of the events he circles every summer, and organisers expect him to test his own mark again this year before turning his attention to Pikes Peak later in August.
On the women's side, Switzerland's Maude Mathys holds the course record of 2:46:03 and will look to defend home advantage in front of a crowd that lines the route from the valley floor to the finish in Zinal. As in most editions, a strong contingent of Kenyan and Ugandan mountain specialists is expected to challenge for the podium, continuing a rivalry that has defined the race's elite fields for the past decade.
Race organisers have again scheduled a staggered elite start, with the women's field set off separately to give the leading runners clean air on the narrow opening climb out of Sierre. Roughly a hundred elite athletes receive direct invitations each year, while thousands more line up in the mass-participation waves that follow, making Sierre-Zinal both an elite showcase and a genuine community event for the Valais region.
The race sits on the WMRA World Cup calendar and functions as one of the last major tests before the Golden Trail World Series finale, giving it outsized importance for runners chasing season-long rankings. With Jornet's record under threat and a loaded women's field assembling, Sierre-Zinal 2026 is shaping up as one of the highlights of the European mountain-running summer.