The Cleveland Marathon is an annual marathon in Cleveland, Ohio. The 26.2-mile (42.2 km) course begins at the corner of St. Clair and 9th and participants have eight hours to finish the race. One of the 50 oldest marathons in America, the first edition was held in 1978. A half marathon, and 10K, including a Corporate Team Challenge, are held concurrently with the full marathon. A 5k race is held on the day before the marathon race day.