Night Trail of the Hill: 2h or 6h race in Élancourt

A 1.6 km loop with 65m of positive elevation gain to be completed solo or in relay, by headlamp light.

Night trail running path in the Colline d'Élancourt, illuminated by headlamps.
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Night trail running path in the Colline d'Élancourt, illuminated by headlamps.

The Colline d’Élancourt hosts the Night Trail, a sporting event offering two race formats: 2h or 6h, to be completed solo or in a team, by the sole light of headlamps.

The sporting event, named Trail Nocturne de la Colline, invites runners to tackle a 1.6-kilometer loop on the trails of the Colline d’Élancourt. Participants must complete this loop as many times as possible within one of the two proposed durations: 2 hours or 6 hours.
Each loop features a positive elevation gain of 65 meters. Registration is free. Runners can participate individually or in teams, guided only by their headlamps, adding an extra challenge to the race.
Two formats are available: the 'For discovery!' format, which will take place from 6:30 PM to 8:30 PM, and the 'For the endurance!' format, which will run from 6:30 PM to 12:30 AM.
To register, three steps are required. First, verify the conditions: participants must be at least 16 years old on the day of the race. Those aged 16 to 17 will need to provide parental consent. Next, prepare your supporting document: a FFA Athlé Compétition, Entreprise, or Running license, or a Health Prevention Pass (PPS) issued within the last year. You can create your PPS on the pps.athle.fr website.
Finally, complete the registration form online only, until bibs are sold out. For team registrations, the captain is responsible for registering all teammates.
Based on information from the official source: Saint-Quentin-en-Yvelines (06/10/2026)