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Triathletes shed clothes for underpants run pre-Ironman World Championship

Hundreds show up for the pre-Ironman World Championship underpants run in what has become an annual pre-race tradition

Kona Underpants Run

Triathletes shed their clothes for the underpants run, an annual tradition, ahead of the Ironman World Championship on Thursday. Kona, Hawaii plays host to the 3.86K-swim, 185K-bike and 42.2K-run championship on Oct. 14.

See more photos over at triathlonmagazine.ca.