TNT, the Trail Nocturne Tournefeuille, starts runners on a Saturday evening in Tournefeuille, near Toulouse, for a spring trail race with an urban twist. L'athlé 632 organizes it as the club's off-road event, complementing its autumn half marathon and 10 km, offering local runners a night race option alongside the road events later in the year.
The initial plan included two routes, one on a Sunday course behind the high school and on the town's higher ground. However, the first version concentrated on the evening route, generally following the Touch river. Following discussions with the municipal sports department, the organizers incorporated passages through some town buildings, contributing to the race's city-trail character. Sébastien Decombe, a coach in the club's trail section, advanced the concept with coaches Danielle and Frédéric. Over 100 members from the trail section assist in its execution. The race and walk are timed, approximately sixty marshals oversee the course, and the finish includes beer and sausages provided by the volunteer team.