Marathon races near San Sebastián

Donostia Training Notes

San Sebastián hosts 7 Marathon races in 2026 within 80 km of the city centre — upcoming dates, recurring series, and other races nearby, all in one place.

Locals run the city by the water first. Paseo de la Concha gives you 7 km along the sea, and it feels like base miles with a view. Urgull gives you 2 km up to Castillo de la Mota when you want a short punch. Ulia gives you 8 km through Mount Ulia when singletrack legs matter. Monte Igueldo gives you 10 km with a real slope. Real Sociedad and CHH Txuri Urdin sit in the local club scene. Maratón de San Sebastián, Media Maratón de San Sebastián, 15 km Donostia - San Sebastián, and Behobia-San Sebastián are the anchor races.

Locals ride out from Donostia on bidegorris, and the city has 30 km of them. Vuelta Donostia gives you 50 km around the city with rural lanes, parks, forests, the Urumea River, Herrera docks, and Ulia cliffs. Leizarán and Plazaola Greenway, Ulzama and Basaburua valleys, and Bidasoa Greenway make good Z2 days. Mount Jaizkibel is where the climbing gets serious. The San Sebastián to Leitza stage covers 47 km and gains 710 meters. Clásica de San Sebastián is the anchor event, and BiziKrosa keeps the cyclocross crowd honest.

Summer gives Donostia its driest, sunniest training block. Locals use July and August for early runs on La Concha and steady rides before the beach crowds fill the day. August averages 22°C, so intervals still work if you start clean and keep the route simple. Mid-September to mid-November is the sweet spot for riding, with morning averages about 15 degrees and coastal roads quieter. January averages 8°C, and winter turns runs toward city loops, Urgull reps, and Ulia trail options. Cyclists keep base miles close, then head inland when the day opens.