The Trail des Évoissons begins and ends in Guizancourt, located in the Somme department of Hauts-de-France, with races typically taking place in late June. This event features hilly natural terrain in the Vallée des Évoissons, primarily utilizing forest paths and trails. Distances vary from shorter trail options around 22 km to longer races extending up to 55 km, and include a 35 km relay format.
The longer courses require participants to manage a portion of their day independently, positioning the event closer to semi-autonomous trail running rather than a fully supported road race. The 55 km course involves approximately 1,650 metres of climbing, the 35 km course around 1,100 metres, and the popular 22 km course about 780 metres. Environmental practices are integrated into the race: runners must use a reusable cup at aid stations, and the event has maintained a sustainable development approach for approximately ten years.