This route starts at mile 0 - the Southern Most Point in the US in Key West and runs 100 miles to Key Largo (Mile Marker 100) and then returns to the Southern Most Point to cover a total of 200 miles over the scenic Oversees Highway. This run follows the old Flagler railway that connected Key West to the mainland Florida and is now part of the iconic Keys 100 race. Many have tried to complete this 200 journey but none have yet to succeed.
