Published: Nov 08, 2010 4:44 PM EST
Updated: Nov 08, 2010 1:44 PM EST

KEY LARGO, Fla. (AP) - A Minnesota carpenter has arrived in the Florida Keys, completing a 4,000-mile cross-county run.

Forty-five-year-old Steve Knowlton left Seattle on July 30, pounding the pavement through 13 states and clocking 40-plus miles a day in his 100-day trek. Knowlton is a veteran of 45 marathons and says he took his run one day at a time.

The journey completed Saturday is aimed at raising money and awareness for the cure of Crohns disease, a chronic gastrointestinal illness. Knowlton was diagnosed with the disease during his senior year of high school.