Semi-Marathon de Rambouillet

Test your limits in the shadow of a historic château at the 38th Semi-Marathon de Rambouillet on Sunday, 29 March 2026. More than just a race, this premier event doubles as the official Yvelines Departmental Championship and a qualifier for the French National Semi-Marathon Championships, attracting a field of elite and amateur runners. With a strict cap of 2,600 participants following a sell-out 2025 edition, securing a bib is a competitive feat in itself. The acclaimed course offers a perfect balance, winding through the charming city center before immersing you for two-thirds of its distance in the serene, leafy expanse of the Rambouillet National Forest. Organized by the Rambouillet Olympique club, this March tradition is renowned for its impeccable organization and a uniquely welcoming atmosphere that bridges competitive spirit and communal joy. Prepare for a fast, scenic, and prestigious run where forest paths meet championship dreams. Don't miss your chance to be part of this celebrated sporting tradition.