A summary of the essential rules for the 1st Edition published so far. For any question, write to ignacio@musubigara.org.
Essential rules
FormatA single non-stop stage of 214 km and 6,020 m D+.
Self-sufficiencyNo assistance and no conventional aid stations: each runner carries what they need.
Zero WasteDropping a single piece of packaging on the course means immediate disqualification and a ban from future editions. It is the only rule with no appeal.
NavigationOfficial GPS track is mandatory, with stamping at all 6 checkpoints.
Time limit50 hours from the start, with the control closing at 18:00.
Entry300 places, allocated in the order pre-registrations arrive; pre-registration includes a mandatory short personal description. Registration opens in January 2027.
SafetyGPS tracker with SOS button, a control centre in Vitoria-Gasteiz and specific ultra-trail insurance with rescue cover, including helicopter, plus international civil liability.
Image rightsRunners grant image rights for editorial and promotional use of the event; direct commercial use requires individual written permission.
The fee and the registration process are explained in the FAQ.
What running self-supported means in practice — water, food, sleep, kit and navigation — is set out in the self-supported guide. To be told when registration opens, join the pre-registration notice list.