Move over Dunkin’ — America runs on Taco Bell. Or at least a certain subset of iron-gutted ultra-runners does.

On Saturday, Oct. 5, about 1,200 registrants are expected to toe the line at the eighth annual International Taco Bell 50K Ultramarathon , a queasy urban adventure that challenges the quads and the colon in equal measure.

The Denver-based race, which is neither endorsed by or affiliated with Taco Bell corporate, invites what one participant calls a “special type of idiot” to run the 31-mile course and eat at nine out of 10 Taco Bells along the way. 14

Runners must order a real food item — drinks don’t count — and consume a Chalupa Supreme (a cheese-laden flatbread-encased taco) or Crunchwrap Supreme (an excessive mix between a burrito and a quesadilla) by stop number fou

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