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 (42.185 km) and from 2015 also a Vertical Kilometer both valid for the Skyrunner World Series.