Tomorrow, Dean Karnazes will run in the Marine Corps Marathon. It will be leg number 43 in his Endurance 50 quest to run 50 marathons in 50 days in all 50 states. Yesterday, in Atlanta's torrential rain storms, he took a nasty fall. But, he hopped right up, bloody, bruised, and wet to the bone and completed yet another 26.2 miles in 4:08. Amazing! Simply amazing!