Out of all the fun runs in the Bayou City, this one takes home the gold because it's sexy and doesn't take itself too seriously. Benefiting local charity Girls on the Run Greater Houston, this two-mile run starts and ends at the Gorgeous Gael Irish Bar, and participants race in bras, panties and Speedos. Our favorite part? The costume contest, bringing us a naughty Catholic schoolgirl, the Captain America collective, a Teenage Mutant Ninja Turtle and many other characters. It's good clean fun — in a sweaty, hot and bothered sort of way — with a nice cold beer chaser at the end.