"Beginning Sept. 17, he will run 50 marathons in 50 days in 50 different states.I've run with Dean before, and he's super-nice. You can contact him on his Web site about running with him, but if you have trouble, let me know.
Only eight of the 50 marathons will be actual events. For the other 42, Karnazes has reached an agreement with race directors in each of the cities to set up the marathon course just for him.
"That doesn't mean you can't run with me," says Karnazes. "Please, join me. The Tuesday run in Iowa won't exactly be crowded."