Trail de Nebian is an autumn trail-running event held in Nebian, a village in France's Herault department within the Occitanie region, located approximately 40 kilometers from Montpellier. The event offers a range of races, from very short village runs to challenging mountain-style courses. Distances include 0.3 km, 0.8 km, 2 km, 3.2 km, 5 km, 8 km, 13.5 km, and 100 km, alongside an 8 km walk.
The significant elevation gain makes the longer races considerably more demanding than the village setting might imply. The 8 km route features around 300 meters of climbing, the 13.5 km route approximately 560 meters, and the 100 km race boasts about 4,400 meters of ascent. Approximately one thousand participants attend the weekend event. The race also includes a playful element with its Slip Race, locally known as a running gag and a distinctive, lighthearted tradition preceding the Christmas costume-race season.