IM Kona 2015 - Underpants Run

Triathlon's version of Mardi Gras is the Kona Underpants Run, which began as a quasi-outlaw dash down Ali'i Drive in outrageous outfits and now has drifted into a mainstream tradition.

Charity underpants underwear run runners event in downtown

Five Facts about the Ironman World Championship in Kona

Letting it all hang out at Ironman: Underpants Run draws a crowd

IM Kona 2015 - Underpants Run

E3 Tri Team — October Team Results

Kona Underpants Run 2015 at IRONMAN World Championships

2015 Kona Underpants Run – Triathlete

Underpants Run Kailua-Kona HI

EMT Kona Week 2010: The five very best photos from today's Ironman