Rondje Château de Porrentruy en L'Allaine

The ride

Roll out of Porrentruy and follow the Allaine river before the road climbs to the Creugenat. Castles stack up along the way, from the Château de Porrentruy to the Fort de Blamont, with the Bibliothèque Municipale Janusz Korczak and Château Sattler close behind. The Savoureuse and the Allan rivers carry you onward, and 72.2 km later you're back where you started.