Demi-Marathon Bonneville de Lachine

The Demi-Marathon Bonneville de Lachine is scheduled for October 18, 2026, in Montréal, Canada. Five races follow one another through the morning: the 21.1 km half marathon at 8:15 a.m., the 10 km at 10:00 a.m., the 5 km at 11:00 a.m., then the shortest events, the 1 km at 12:00 p.m. and the 2 km at 12:15 p.m. The course follows the shores of Lac Saint-Louis and the banks of the St. Lawrence.

The staggered starts make it easy to come as a family, with the kids' distances closing the program once the adult races are over. The 5 km and 10 km suit casual runners or anyone pinning on a bib for the first time, while the half marathon, which goes off early, calls for eight to twelve weeks of training and a long run gradually built up to 16 to 18 km. Running by the water provides handy visual landmarks for breaking the effort into sections.