Meet the ‘special type of idiot’ running the Taco Bell ultramarathon — where competitors eat at the chain 9 times during the race

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. …