In Saint-Pierre, the Trail Blanc du Grandvaux began with 320 participants competing in four races on a Saturday afternoon. This winter trail-running event takes place in the Grandvaux region of the Jura, organized by the Haut-Jura club under Marie-Pierre Guilbaud.
The adult schedule includes 8 km and 16 km races, with two separate races for children. The adult events are part of the Challenge des givrées jurassiennes, which also includes winter trail races at Métabief and Chapelle-des-Bois. The inaugural event attracted sufficient runners to be considered a local success.