Sierre-Zinal, Europe's oldest mountain race, returns for its 53rd edition. Known as 'the race of five 4000s', it features a 31-kilometre course with significant elevation changes. The event combines the WMRA World Cup and Golden Trail World Series.

The race has seen record-breaking performances by Kilian Jornet and Maude Mathys. This year, the WMRA and AIU launch an anti-doping education initiative. Elite athletes from various sports, including triathlon and skiing, will compete. Read more trail coverage.

Defending champions Philemon Ombogo Kiriago and Caroline Jepkoech Kimutai return. Ruth Gitonga leads the women's World Cup, while Sophia Laukli and Nienke Brinkman aim for strong performances. The men's competition includes top World Cup contenders and seasoned veterans. Related: Trail Running Highlights: July 27, 2026.

This original Runner World brief is based on reporting from Athletics Weekly. Visit the source for its complete reporting, context and any later corrections.