Diodurun

Tackle a unique and grueling test of endurance and strategy at Diodurun 2026 set for Sunday, 1 February 2026 in Saint-Rémy-l’Honoré, Yvelines. Inspired by the ancient Gallo-Roman site of Diodurum, this innovative event from ADN Trail 78 challenges runners to complete eight consecutive 6.7km loops, each with a strict one-hour time limit, starting every hour from 8:00 AM. The time saved on each loop becomes your recovery window, demanding expert pacing and resilience in a true 'run, recover, repeat' format.

The event emphasizes community, environmental responsibility (with a 'bring your own cup' policy), and a festive, supportive atmosphere. With a limited field that sold out quickly, Diodurun has established itself as a must-do, avant-garde challenge for trail runners seeking to push their physical and mental limits on the scenic trails of the Rambouillet forest.