Rich McCrea had a tough but fulfilling day in early June.
"I've run 24 marathons and 10 ultra-marathons. It is by far the most difficult thing I've ever done," McCrea said.
McCrea loves to run. He uses marathons as training for bigger goals. Just last week, McCrea competed in the Comrades Marathon in South Africa. It's the world's oldest and largest ultra-marathon -- a grueling 56 miles.
"It was a lot of suffering, a lot of cramping. The last 25 miles I was dealing with a lot of pain. And so I just had to use my mind to overcome the pain," McCrea said.