Video: Triathletes take on the best 10K runners in the world at the 2010 Bolder Boulder

Over 50,0000 runners finished the 2010 Bolder Boulder this year and among them were at least three professional triathletes.

Chrissie Wellington, Olympians Laura Bennett and Greg Bennett all raced in the professional waves and took on some of the best 10K runners in the world.

Chrissie Wellington raced for the U.K. while Olympian Greg Bennett ran as pro for the first and last time for team Australia.