With just under a month until triathlon's biggest contest in Kona, Hawaii, a stacked field of pros assembled in the Nevada desert to contest the Half-Ironman World Championships. The race designated as the championship race has been 70.3 Las Vegas for the last few years, a departure from its previous location in Clearwater, Florida. Last year, Craig Alexander pulled off a feat no one had ever done by winning the 70.3 World Title, and four weeks later claiming the full Ironman World Title in Kona. This year, his chance at the double crown is already shattered. Sebastian Kienle, known for his ultra-aggressive bike position (and bike speed) used his skills to his advantage, building up a big lead heading into T2 that no one would erase. On the women's side, Leanda Cave finished a long, protracted battle with Kelly Williamson, who was charging down on Cave throughout the run. Of course, there was a whole bunch of beautiful gear out there on race day, and we were there to cover it all. Enjoy this supersized gallery of images from the 2012 Ironman 70.3 World Championships in Las Vegas, Nevada.