Duathlon de Couëron

Race facts

• The course covers 20 km.
• It takes place on a Sunday, October 4, 2026 — autumn in this part of the world.
• The closest comparable triathlon event is Swimrun des 20 Plages Saint Nazaire in Saint-Nazaire, 37 km away, on October 3, 2026.
• 3 of the 12 most similar events take place in the same month.