The Zegama-Aizkorri (also known a Zegama-Aizkorri Maratoia or Maratòn Alpina Zegama-Aizkorri) is an international skyrunning competition held for the first time in 2002.

It runs every year in Spain from Zegama up to Aizkorri (1551 m MLS) and finish in Zegama (Basque Country) in May and consists of two races, a SkyMarathon (42.195 km) and (since 2015) a Vertical Kilometer; both races are part of the Skyrunner World Series.

[1] Since its debut, the Zegama-Aizkorri SkyMarathon's length has been 42.195 km.

[2] * Fastest time ** Edition 19 and 20 cancelled due to the COVID-19 pandemic