The Cross Popular de la Olimpiada Marianista Aldapeta is a 1.52 km popular race in Donostia-San Sebastian, part of the Parallel Olympics linked to the Marianist Olympics. It is a short, open community run, not a long-distance challenge, with separate morning starts for children, cadets, juveniles, and the popular race.
The route begins at Plaza del Padre Claret and concludes at Explanada Sagues in the Gros area. Families, visitors, and friends of the Marianist Olympics may participate, requiring prior registration and a symbolic 3 euro fee. Runners pick up their bibs on race day at the information point on the Sagues esplanade, up to 15 minutes before the start.