The Semi-Marathon de Mulhouse is an evening road half marathon in Mulhouse, in the Haut-Rhin department of France's Grand Est region. The main race is the standard 21.0975 km distance, with a flat urban course and about 50 metres of climbing. Runners can also enter a relay with two or more people, and the event includes children's and junior races, so it is not only for solo half-marathoners. It is held around early spring, and the organizer presents it as a responsible event with an environmental focus.
The half marathon uses one loop around the Stade de l'Ill area and threads through central Mulhouse rather than heading into the countryside. The route crosses the Ill canal, then passes Square Steinbach, Place de la Réunion, the central train station, the new basins, Casernes Lefebvre, the exhibition park, and the Cité de l'Automobile. Recent fields have been over 1,000 runners for the half marathon, with more than 200 in the relay. After the race, the local food angle is very Alsatian: bretzel, choucroute, and kougelhopf are part of the post-run picture.