The World's Most Gastricly Challenging Race
On October 4 th , 2025, the 8 th edition of the International Taco Bell 50k Ultramarathon took place in Denver, Colorado . Of more than 1500 registrants, approximately 750 starters toed the start line to attempt The World’s Most Gastricly Challenging Foot Race . The origins of the race are shrouded in mystery, but it is said the founders were a Stoic Russian, a Short King from New York, and a Blind Changeling. The race has grown from 8 Denver runners and a dog to more than 750 runners, bikers and dogs from 40 US states, Puerto Rico and Canada. The Stoic Russian has named the race for all of the editions, which are as follows: 2018 (year 1): The Taco Bell 50k 2019 (year 2): The 2 nd Annual Taco Bell 50k 2020 (year 3): Revenge of the Chalupa 2021 (year 4): Spinal Tap Edition 2022 (year 5): Rise of the Soft Taco (Diablo Deuce Edition – Saturday Taco Bell 50k in Denver, CO & Sunday Taco Bell 50k in Portland, OR) 2023 (year 6): The Pinto...