Medio Maratón Donostia San Sebastián

Race facts

• The course covers 21.1 km.
• It takes place on a Sunday, October 4, 2026 — autumn in this part of the world.
• The closest comparable running event is Bertxin Xtrem in Andoain, 12 km away, on October 10, 2026.
• 12 of the 12 most similar events take place in the same month.