Randonnée Des Chataignes is a cycling randonnée held in Pleslin-Trigavou each October, organized by Cyclo-club d’Armor. This year, a gravel category is offered alongside the established road and mountain bike options.
The road routes cover 60 km and 75 km, passing through Plouër, Miniac-Morvan, and Lanhélin. Mountain bikers can select 26 km or 51 km routes that traverse Tréméreuc, Plouër, and La Ville-ès-Nonais. The event provides distinct experiences for road cyclists and off-road riders.