Not your average mix of brains and brawn

Today's triathlon has all kinds of competitors, each combining mental and physical toughness

Photo credit: Nick de la Torre, Houston Chronicle

Read more: http://www.chron.com/disp/story.mpl/sports/7627228.html#ixzz1QVBo2TbT

Participants swim 400 meters and cycle for 12.4 miles before finishing with a 3.1-mile run. This triathlon is known as a sprint.