La 14-18 - Thiescourt 2026

La 14-18 is a flat trail-and-obstacle race in Thiescourt, Oise department, Hauts-de-France, approximately one hour from Paris. Typically scheduled for mid-October, the course spans about 10 to 11 km, depending on the listing. The format is straightforward: run off-road, navigate obstacles, and maintain forward momentum rather than focusing on uphill climbs. The race strongly incorporates its First World War theme, evident in the name La 14-18 and the "défi des poilus," referencing French soldiers from that era. One description details a 10 km route with 33 obstacles over naturally challenging terrain. Another outlines 11 km of trail, made more accessible by its minimal elevation gain. This event appeals to runners seeking an obstacle race without extreme distances, and its flat profile offers a more accessible option for diverse ability levels compared to many trail races.