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Costa Mesa Police Department
Tuesday April 30th, 2024 :: 01:10 p.m. PDT


Traffic advisory and street closures for OC Marathon this weekend

COSTA MESA, Calif. (April 30, 2024) -- This weekend is the 20th Annual OC Marathon! The Costa Mesa Police Department (CMPD) will be monitoring traffic and road closures for the event. For the safety of the community and the event participants, CMPD reminds everyone to follow traffic sign directions and obey the rules of the road. 
There will be various closures and detours from the fairgrounds to the Fashion Island area in Newport Beach, including:
  •  Fairview Road from Fair Drive to Arlington Drive
  • Merrimac Way from Harbor Blvd. to Fairview Road
Expect delays and closures on these roads on Saturday, May 4, between 4:30pm and 6:30pm (for the 5K) and Sunday, May 5, between 5am and 12:30pm (for the half and full marathons). 
The OC Marathon has partnered with Waze to give you the best experience possible to navigate around road closures with real-time traffic, optimal routes, and event-related road closures.
A complete list of road closures and times can be found at

Schedule of Events:
  • OC Lifestyle and Fitness Expo – Friday, 4pm-8pm & Saturday, 10am-5pm
  • Kids Run the OC – Saturday, 8am-noon
  • OC Lifestyle & Fitness Expo – 10am-5pm
  • Celebrate OC  – Saturday, 2pm-7pm
  • Celebrate OC 5K – Saturday, 5:30pm-6:30pm
  • OC Marathon start – Sunday, 5:30am 
  • OC Half Marathon start – Sunday, 6:30am 
  • Finish Line Party – Sunday, 7am-noon
To all participants, have a great and safe weekend!


Costa Mesa Police Department
99 Fair Dr
Costa Mesa, CA 92626

Emergency: 9-1-1
Non-emergencies: 714-754-5252

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