BUTS Gasteiz Iruñea is a Basque Country trail running event held in Vitoria-Gasteiz, Álava, Spain, with editions scheduled for mid to late summer. The primary race distances are long mountain routes, offering options around 75 km and 132 km. The 132 km route is a UTMB Index race, featuring approximately 6,260 meters of elevation gain.
The event commences in Vitoria-Gasteiz, with Parque de la Florida noted as a race venue. The event's name connects the route to Gasteiz and Iruñea, the Basque names for Vitoria-Gasteiz and Pamplona, respectively. Shorter races have also been part of the program, including a 22 km mountain walk, a 16 km trail with 650 meters of gain, a 26 km trail with 1,300 meters of gain, and a 5 km canicross. A previous 130 km edition saw 231 finishers, indicating the long race attracts a competitive field without being overly crowded. TRAIL 52 SPORT is listed as the organizer.