Explor'Run Port d'Envaux | Crazannes is a small trail-running event in Charente-Maritime, based around Port-d'Envaux and Crazannes. It is held in early March and offers two main trail distances: a 21 km trail with 200 m of climbing and an 11 km discovery trail with 70 m of climbing.
The longer race starts first in the morning, followed shortly by the 11 km, so the adult field is split between runners wanting a half-marathon-length trail and those choosing a shorter off-road route. The event also includes two children's trail races, 1.2 km and 700 m, both low-cost entries aimed at making the morning open to families as well as adult runners.