The International Taco Bell 50K, set to challenge the most iron-willed (and iron-stomached) runners on October 3, 2026, in Denver, CO, is far more than just an ultramarathon. This unique 50K event, traversing 31 miles of urban Denver streets, has carved out a legendary reputation for its blend of physical endurance and gastronomic fortitude, boasting a higher "Did Not Finish" rate than the formidable Leadville 100 Trail Race. Participants embark on an urban adventure, navigating a loop course that features ten mandatory stops at Taco Bell locations, where they must consume a menu item from at least nine of them.

Forget traditional aid stations; your fuel for this epic journey will include a Chalupa Supreme or Crunchwrap Supreme by the fourth stop, and a Burrito Supreme or Nachos BellGrande by the eighth, with strict rules against stomach aids and a zero-tolerance policy for vomiting. Runners must retain all receipts and wrappers as proof of their audacious culinary feat. Held annually, often coinciding with International Taco Day, this race is a testament to camaraderie forged through shared suffering and "Type 2 fun". Typical race day conditions in early October offer crisp Denver weather, with highs around 71°F and lows around 41°F, and only a 5% chance of precipitation.

Finishers, affectionately known as "Survivors," earn bragging rights and a commemorative item, a reward for conquering not just the miles, but also the formidable digestive demands of this one-of-a-kind urban ultra. Whether you're vying for a personal best or simply aiming to prove your gastrointestinal mettle, the International Taco Bell 50K promises an unforgettable experience that redefines the limits of endurance running.