La ruée du Viaduc - Saint-Symphorien-de-Lay 2027

La R u00e9e du Viaduc is a trail-running event in Saint-Symphorien-de-Lay, Loire, France, offering four hilly race options from 8.7 km to 25.6 km. The longest route includes 830 m of climbing over 25.6 km, with 70% on trails, resembling a compact mountain effort more than a road race. Shorter races also feature ascents: 16.8 km with 495 m, 12.1 km with 380 m, and 8.7 km with 240 m. Entry limits are set between 100 and 150 runners per distance, contributing to a local, limited-field atmosphere. The routes navigate villages, woods, and old viaducts near Saint-Symphorien-de-Lay, avoiding simple out-and-back designs. The 25.6 km course passes through Lay, Les Pelouses, Bois Rouge, and R u00e9gny, incorporating climbs, descents, the Ecoron viaduct, Bois de Marigny, Trou du Diable, a pond, and the Roche viaduct. The 16.8 km race covers similar terrain with added climbs at Pramondon and Martoray. The 12.1 km route focuses on the climb to Les Pelouses before rejoining the viaduct and woods section. The 8.7 km option maintains local character with a descent via Chemin de la Mine, Bois de Marigny, Trou du Diable, the pond, and the Roche viaduct.