Running Races in Costa Mesa, California 2026 | Browse All Races

There are 2 running races in Costa Mesa, California in 2026. The next is the The OC Fair Fun Run on August 9. Distances include 5K races, marathons.

Sun, Aug 9 · Costa Mesa, CA Costa Mesa

Virtual Virtual OC Fair Fun Run 1 MileThe 1.1 Mile Carnival Detour DashVirtual OC Fair Fun Run 5K +1

From $35 Open Closing Soon

Sat, May 1 · Costa Mesa, CA Costa Mesa

Virtual 5K Run5K Walk5K Walk +35

From $0 Closed

Running Races in Costa Mesa, California — 2026