Our Next OC Marathon Running Festival is May 1-3, 2020 May 3, 2020 5:30 a.m. start 26.2 miles Learn More Register May 3, 2020 6:15 a.m. start 13.1 miles Learn More Register May 2, 2020 5 p.m. start (Sat) 3.1 miles Learn More Register May 2, 2020 8 a.m. start 1 mile Learn More Full Marathon Flyover Video Half Marathon Flyover Video SDCCU OC Marathon 2018 OC Half Marathon