The movie was shot from late May to mid-July 2023 in Longué-Jumelles, in the Anjou region in France, where writer/director Antoine Chevrollier spent his childhood. While the movie is not autobiographical, it's very much inspired by his experience: he shot in the street where he grew up, in the church where he buried his friends, the road crossing scene is inspired by a stunt he would do on bikes with his friends, etc.
Antoine Chevrollier worked on the script for years, and when he started getting help from his co-writers, he quickly took them to Longué-Jumelles so that they would get a feel of the place.
The French title, "La pampa" is of course the name of the motocross track, but the word is usually used to describe a rural area, like "The sticks", or "The boondocks".