15 km Donostia - San Sebastián 2026

The 15 km Donostia - San Sebastián is a road race held in late October in San Sebastián, a Basque coastal city also known as Donostia. The primary event is the 15K, with a 5K offered for those seeking a shorter distance. It accommodates a wide range of participants: individuals aiming for a fast time, runners preparing for longer races, novices, wheelchair athletes, and handbikers are all included. Over 5,000 people start annually, giving it the atmosphere of a city-wide event rather than a small local run. The 15K course begins on Avenida de Madrid and concludes on Paseo de Anoeta. It is entirely within the city, is at sea level, and is closed to traffic, contributing to its reputation as a personal-best course for many. The route passes La Concha promenade, City Hall, the boulevard, Zurriola beach, wide central streets, and narrower old-town lanes. The race also fosters a strong community spirit: a skating club travels from Barañain each year, past champions discuss winning multiple txapelas, and finish-line stories often feature international visitors meeting the time limit and long-time friends still competing together after many years.