OC Marathon

MAY

1-2

2027

A multi-day running festival in Orange County each May featuring a full marathon, half marathon, 5K and a kids run along a coastal course. The weekend includes a fitness expo and a finish line festival near Newport Beach and Costa Mesa.

1-2 May 2027

Costa Mesa, California

Website

26 miles 13 miles 5 kilometers

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OC Marathon Running Festival

The OC Marathon is a multi-day running festival held every May in Orange County, California. The weekend program includes a Lifestyle and Fitness Expo at the OC Fair & Event Center and a Celebrate OC finish line festival. The course runs along coastal and bayside streets, passing through Newport Beach, Costa Mesa, and neighborhoods of Santa Ana.

The festival provides events for a range of participants, including runners, walkers, and wheelchair athletes. A 5K event added in 2025 is scheduled on Saturday evening as part of the weekend lineup. The weekend also features activities aimed at families, including a Kids Run program that promotes an active, healthy lifestyle for children.

The event has taken place since 2004 and regularly draws thousands of participants and spectators. Organizers list a variety of weekend services and community features such as entertainment, exhibitors at the expo, and a post-race celebration near the finish area.

Distances Visit the organization's website for the most recent information.