The 10 km Carquefou is a road race held in Carquefou, a town in Loire-Atlantique, western France, near Nantes. It typically takes place in late winter, with the next edition scheduled for late February. The race is popular; 1,300 bibs for the 10 km sold out in minutes. The race director has indicated the field could approach 3,000 starters if not capped. A recent edition saw 1,200 runners at the start and 1,147 finishers.
The course is urban and fast, with the organizers as very rolling, which may contribute to the strong field. In that same recent edition, 223 runners finished under 35 minutes and 624 finished under 40 minutes. The event also features races for children and juniors, and the organization provides support to France Rein, a French kidney-health association.