Seine Marathon 76 – 8th edition – 26–27 September 2026

Seine-Marathon 76 (Seine-Marathon 76 - 8ème édition) is a festival-style running weekend held in Rouen, France, organised by Sport Plus Conseil in partnership with the Département de la Seine-Maritime. The event takes place across a single start hub at the Hôtel du Département de Seine-Maritime with a common finish along the quays of the Seine, offering a centralised festival atmosphere for participants and spectators. The official site frames the meeting as "Le festival running de la rentrée", emphasising conviviality, local products and a family-friendly village that accompanies the sporting programme.

The weekend comprises a programme of races from an informal 5 km Matmut event to the full Marathon, plus a corporate marathon relay and children’s races, with live entertainment, food trucks and activities for children. Registrations for the 8th edition are open on the official site and the organisers highlight solidarity and environmental respect alongside the sporting aspects. Detailed start times and full race inclusions appear on the individual race pages within the official site.