las vegas marathon

Health officials say tainted water doesn't seem to be the cause behind hundreds of reports of gastrointestinal illness following the Rock 'n' Roll Las Vegas Marathon.

In this photo taken Sunday, Dec. 4, 2011, Rachel Midgett of Houston, Texas, foreground, stretches with Heather Keister of Lubbock, Texas before heading to the start line to run in the half marathon of the Las Vegas Marathon, in Las Vegas.

An American Idol finalist performing at the Rock `n' Roll Las Vegas Marathon is putting the spotlight on the digestive system diseases that nearly sidelined his singing bid.

Poison singer Bret Michaels performs at the finish line of the Zappos.com Rock 'n' Roll Las Vegas Marathon and Half-Marathon at the Mandalay Bay Resort & Casino December 5, 2010 in Las Vegas, Nevada.

Poison singer Bret Michaels performs at the finish line of the Zappos.com Rock 'n' Roll Las Vegas Marathon and Half-Marathon at the Mandalay Bay Resort & Casino December 5, 2010 in Las Vegas, Nevada.

Josh Cox won the Las Vegas Rock 'n' Roll Marathon on Sunday and Dorota Gruca took the women's race on her 40th birthday.

Despite live bands, white bengaled tigers, dancing girls and a pre-race fireworks display, it was a couple of Kenyans who stole the show Sunday morning at the Rock 'n' Roll Las Vegas Marathon.

With thousands preparing for the upcoming Las Vegas Marathon, get some expert advice on how to get your body into great shape without hurting yourself.