About This Race
The 163K represents the ultimate test at HOKA Val d'Aran, demanding exceptional endurance and pacing discipline as runners navigate the full spectrum of Pyrenean terrain over what becomes a true multi-day mental challenge compressed into a single effort. This distance requires experienced ultra runners who have mastered fueling strategies and sleep deprivation management, as the extended time on technical mountain terrain pushes well beyond standard ultra-marathon boundaries. The 163K separates itself from shorter distances through its relentless accumulation of elevation and technical demands, where runners must maintain focus and form across multiple mountain systems while managing the psychological challenge of an effort that extends deep into the night.
Notable Features
As the European Major of the UTMB World Series, this event offers direct qualification to UTMB Mont-Blanc for top finishers and doubles Running Stones for all participants. The multi-day festival format across seven different races provides options for runners of all abilities while maintaining the prestige and technical challenge expected from a UTMB World Series event in the dramatic Pyrenean landscape.