The Harmonie Mutuelle 20 km de Paris is a Paris road race held in October. Its main 20 km event begins at the foot of the Eiffel Tower. Thousands of runners participate annually, with additional 5 km, 10 km, and 15 km options available, catering to participants of all racing levels.
The route commences on the Pont d'Iéna, heading towards the Arc de Triomphe, incorporating two of Paris's well-known landmarks early on. The course features numerous false flats, potentially making it more challenging than its profile indicates. The race benefits the Grégory Lemarchal association, contributing a charitable aspect to an event focused on mass participation within the city.