The OC Marathon is an annual marathon held in Orange County, California. The first marathon was held in 1987, and the race has been held every year since then. The marathon is a Boston Marathon qualifier, and it attracts runners from all over the world. The 2025 OC Marathon will be held on Sunday, October 12, 2025.
The OC Marathon is a popular event for both runners and spectators. The race course is scenic and challenging, and the event offers a variety of amenities for participants. The marathon also has a significant economic impact on the Orange County community. In 2019, the race generated an estimated $15 million in economic activity.