CBS reality stars support Stand Up To Cancer mud run

Past stars from "Survivor," "The Amazing Race" and "Big Brother" will join in a 5K mud run in Silverado, Calif. on Sept. 10 in support of Stand Up To Cancer.

CBS is sponsoring the "Reality Mud Run," in partnership with Around the World Prods., founded by "Survivor" alum Burton Roberts and "Amazing Race" grad Alex Boylan.

Other participants are scheduled to be Ethan Zohn, Jenna Morasca, Amanda Kimmel, Yau-Man Chan, Natalie Tenerelli, Phillip Sheppard, Chad Crittenden, Joel Klug, Uchenna Agu, Megan Rickey, Cheynne Whitney, Dennis Frentsos and Will Kirby.

"It's very rewarding to be able to use reality television as a platform to bring together my friends and raise money and awareness for cancer research.," said Zohn, winner of "Survivor: Africa" before overcoming Hodgkin's lymphoma.