PHOENIX -- Six years and the Undy 5000 is still going strong with hundreds of people stripping down to their skivvies all for a good cause.
“Superman underneath, little blue hair on the top," runner Darin Goss said. "it's going to be a great event and we're happy to be here to support a good cause."
The Undy 5000 is hosted by the Colon Cancer Alliance.
To these runners, there are no ifs and or butts about it, running in your undies can save lives.
"The best prevention is colon screening and a lot of people are afraid to do it," runner Jamie Brown said. "The hardest part, we tell everybody is the preparation, the procedure itself is very easy."
The Undy 5000 participants made their way through downtown Phoenix Saturday morning. The goal of the event is to expose the truth about colon cancer, to get people to talk about this disease and the fact that somebody loses his or her life to it every 10 minutes.
“The American Cancer Society regulations say you should start checking at age 50," Janelle Hill, one of the event organizers, said. "I personally was 35 years old when I was diagnosed with stage 2 colon cancer, so it's important to me to get the word out too it is happening to young people, too."
According to the event's website, Undy Run participants have raised more than $68,500 this year. That's just in Phoenix.
The Undy 5000 is held in 18 different cities across the U.S. The grand total for all of the events so far is more than $1.3 million.