A third source, neither the ministry census nor OpenStreetMap: what the town itself publishes. It is the only one that says where a facility came from, who built it and what it cost.
Chavagnes-en-Paillers's pumptrack is part of Parc Bayard, a sports park laid out at the southern entrance to the town, next to the existing city-stade and tennis courts: tennis, padel, playground, pétanque, fitness platform. The pumptrack's earthworks followed the standards for gradients and heights.1
Location
Parc Bayard, at the southern entrance to the town1