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The Spiti Ultra Marathon (Kunzum La Challenge – 77 km) stands as one of the most demanding endurance races you can take on. Set against extreme altitudes and rugged terrain, it pushes runners to their physical and mental edge in an unforgiving yet breathtaking environment.
With every step across Spiti’s stark and dramatic landscape, the challenge intensifies—testing resilience, focus, and determination. This isn’t just about finishing a race; it’s about proving what you’re truly capable of in one of the toughest conditions on the planet.









Given the distance and challenging terrain, participants are required to complete the race within a 13-hour time limit. All runners who cross the finish line will receive an official finisher’s certificate, with their completion time recorded.