Demi-marathon de Thetford

The Demi-Marathon RBC de Thetford is a community running event in Thetford Mines, Quebec. The 12th edition is on Sunday, September 14, 2025, with proceeds benefiting Grands Frères Grandes Sœurs des Appalaches and the Club des Déjeuners de la Polyvalente de Thetford Mines. Runners may choose from four distances: 1.2 km (family-friendly with cheering stations), 5 km, 10 km, and 21.1 km, the half-marathon distance.

The 5 km loop mixes urban streets and greenspace, the 10 km uses bike paths and streets, and the 21.1 km traverses downtown Thetford. Start at Centre Mario Gosselin. Visit the organization's website for the most recent information.