Just a week after news spread that Ethan Zohn's cancer had returned, the 'Survivor: Africa' winner proved that he wasn't going to let the cancer crush his spirits by completing the New York City marathon.

It was an emotional moment for both Zohn and his girlfriend or eight years, Jenna Morasca, who was there when he received the news that his cancer had returned to his lungs. But Zohn wasn't going to let his aching body stop him from achieving his goal. He was determined to outrun the cancer.

"My quads were burning, my hamstrings felt like they were about to rip off," he told People magazine after the marathon. "But I knew with every step I was crushing little cancer cells on the road. I even wrote 'f--k canzer' on the bottom of my shoes. That's what kept me going."