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.
Nantes's first pumptrack opened on 30 May 2026 in the heart of the Jardin du Rail, on the Île de Nantes: a loop of bumps and banked turns, to be ridden by bike, BMX, roller skates or scooter.1