Gasteiz-Iruñea Basque Ultra Trail Series 2021. A 130 km Mountain Challenge

The Gasteiz-Iruñea race is one of the most challenging and scenic events in the Basque Ultra Trail Series (BUTS). Scheduled for May 7-9, 2021, this race pushes participants to their limits with a 130-kilometer route and a combined elevation gain of 6,200 meters. Known for its tough yet rewarding terrain, the race takes athletes through some of the most stunning landscapes in the Basque Country, making it a highlight of the region’s ultra-trail running calendar.

Starting in Gasteiz and finishing in Iruñea (Pamplona), the course is a true test of endurance. Runners will traverse diverse trail surfaces, from mountain tracks to roads, with the majority of the course offering breathtaking views of the Basque mountains. The event allows participants to experience the rich natural beauty of the region while competing in a highly technical and demanding race.

Event Overview

Before diving into the technical aspects, here’s a quick summary of what to expect from the Gasteiz-Iruñea ultra race. It’s designed to challenge the most experienced runners with its long distance and high elevation gains, while also offering incredible scenery and a memorable race atmosphere.

  • Date: May 7-9, 2021
  • Distance: 130 km
  • Elevation Gain: 6,200 m (positive), 6,300 m (negative)
  • Max Participants: 350
  • Starting Point: Gasteiz (Vitoria)
  • Finishing Point: Iruñea (Pamplona)
  • Cut-off Time: 33 hours

Key Highlights of the Gasteiz-Iruñea BUTS Race

The Gasteiz-Iruñea race is part of the prestigious Basque Ultra Trail Series, known for its incredible technical challenges and stunning locations. This particular leg offers participants a rich experience, combining physical endurance with the joy of running in some of the most beautiful mountainous terrain.

  • Terrain: A mix of roads, mountain paths, and asphalt (73% trails, 21% tracks, 6% asphalt)
  • Extreme Gradients: Maximum positive slope of 46.9%, with a negative slope reaching 33.9%
  • Highest Peak: Beriain (1,493 m)
  • Ration Points: 11 aid stations, with a living base at Arbizu Campsite
  • Mandatory Medical Certificate: All participants must provide a valid medical certificate

Are You Ready?

The Gasteiz-Iruñea race offers a unique challenge for ultra-distance runners, with a diverse course that includes both technical mountain sections and fast, runnable paths. This race promises an unforgettable experience filled with awe-inspiring landscapes and demanding terrain.

With strict cut-off times and a limited number of participants, the Gasteiz-Iruñea race is not for the faint-hearted but offers one of the most rewarding experiences for trail enthusiasts.