Trail de l’Isle-Adam is an annual running and outdoor event held in a natural setting in the Val-d’Oise region of France. Now preparing for its 14th edition, the event is scheduled for 10 and 11 October 2026 and invites participants to take on sporting challenges across a variety of routes. Its programme features trail running, walking, a night-time event, challenges and a Maratrail. Earlier event information also highlighted a 27-kilometre trail and 13- and 10-kilometre walking options; participants can consult the organiser’s course details for the current edition.

More than a race, Trail de l’Isle-Adam presents itself as a community-minded experience. It is a non-profit, association-led event with a charitable purpose: registrations support Source Vive, an organisation that has assisted children with cancer or leukaemia and their families for more than 35 years. The event brings together sport, outdoor discovery and solidarity, encouraging runners and walkers to participate while contributing to a cause. Its website provides practical information, regulations, results, event photos, partner details and volunteer information.