An adventure combining nature, heritage and sporting challenge. More technical and demanding than the Trail 30km, the Trail 35km is aimed at runners ready to take things to the next level. With its hilly trails, forest sections and faster-paced profile, it offers an authentic trail experience in the heart of western Paris. An intense adventure crowned by a finish in a unique setting: the Observatoire de Paris-PSL in Meudon, with a breathtaking view of the capital.