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Demi-Marathon Bonneville de Lachine

📅 October 17, 2027 (estimated date)📍 Montréal · Canada

⚠️ 2027 edition: provisional information

The date is estimated from the 2026 edition (October 18, 2026), on the same day of the week. Courses, start times, fees and description are carried over from the previous edition: check them on the official website. This page will be updated as soon as the organizer publishes them.

Available distances

21.1 km10 km5 km2 km1 km

About

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.

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