The Williams Route 66 Marathon is a Boston-qualifying race that is run on a USATF certified course throughout 26.2 miles of the historic and scenic streets of Tulsa. All participants are timed electronically, and first time marathoners will receive a special “My First Marathon” Finisher’s Medal. The Center of the Universe Detour offers a free and optional detour to a unique Tulsa landmark, adding .3 miles to the race.