Sacré Trail des Collines begins in Parc du Clos des Chartreux in Tullins, Isère, at the base of the Voironnais hills. This trail-running event offers three adult distances: approximately 15 km, 27 km, and 37 km, with ascents varying from about 580 to 1,600 metres based on the chosen distance. The race takes place in March and is designed for participants seeking a hilly, predominantly natural course over a road race.
Approximately 90% of the route is off-road, emphasizing paths, climbs, and varied terrain rather than flat speed. The 15 km “Trail pour tous” provides a shorter option for less experienced trail runners. The 27 km “Sacré Trail Express” serves as the opening event for the Pays Voironnais Trail Series, and the 37 km Sacré Trail des Collines is the longest adult distance. Youth races are also included, with distances tailored to age groups.