OC Marathon

The event commonly known as the OC Marathon is held annually in Orange County, California, traversing the coastal communities of Newport Beach, Costa Mesa, and Santa Ana before finishing at the OC Fair and Event Center in Costa Mesa. The full marathon begins near Fashion Island in Newport Beach and ends at the heart of Costa Mesa, making it a point-to-point race where the starting and finishing locations differ.\n\nParticipants can select from several race formats, including a full marathon (26.