Run in Montluc - Saint-Étienne-de-Montluc 2026

Run in Montluc, a first-edition running weekend in Saint-Etienne-de-Montluc, Loire-Atlantique, offers one evening of trail races and a morning road half marathon near the marshes. The main trail, the Trail des Lucioles, begins after dark: runners navigate 24 km on GR3 paths with headlamps, featuring 330 m of elevation gain and a semi-autonomous setup. A shorter 12 km night trail follows, with 160 m of climbing, for those seeking a similar nighttime atmosphere over a reduced distance. The trail courses include singletrack, woodland paths, and undulating terrain around Saint-Etienne-de-Montluc. The Semi Marai'thon is a flatter 21 km road race bordering the Loire marshes, with approximately 100 to 120 m of climbing. This half marathon can be completed individually or as a two-person relay, divided into 10 km and 11 km segments. The schedule clearly separates Saturday evening for headlamp-lit, technical trails from Sunday morning's faster road race or shared relay near the marshes.