Alerte Zombies is a Halloween-themed night race held at Loisinord in Nœux-les-Mines. The Stade de Glisse serves as the meeting point starting in the late afternoon. The event features a 12 km night trail, a one-hour orienteering challenge, and a children's race, structured as a spooky evening of running rather than a single standard start.
The course winds through Loisinord's ski slope area and adjacent woods, with zombies positioned along the route to add challenge as participants navigate the dark. The orienteering race is designed for teams of 2 to 6, tasked with locating the maximum number of checkpoints within the hour. Beyond the running, attendees can enjoy a DJ set, food trucks, waffles, and crepes, creating a Halloween gathering atmosphere with running as the central activity.