Published March 31, 2011 02:21PM

The unofficial start to the North American triathlon season has always been the Ironman 70.3 California triathlon in Oceanside, Calif. and this year is no different. Some of triathlon’s biggest names, including defending Ironman world champion Mirinda Carfrae, are set to jump into Oceanside Harbor this Saturday, April 2.
Click here to see our complete coverage of the 2011 Ironman 70.3 California Triathlon.
Look back on last year’s professional and age-group races with this photo gallery from photographer Paul Phillips: