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Costa Mesa Police Department
Friday April 29th, 2022 :: 10:42 a.m. PDT


Traffic Advisory: OC Marathon route detours and road closures

Beginning today, Friday April 29 through May 1, the OC Fair & Event Center will be the spot for the 18th Annual OC Marathon Running and Celebrate OC Festival. 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. 

From OC Fair & Event Center:

OC Marathon route detours, road closures

´╗┐The SDCCU OC Marathon Running Festival is taking place this Friday, Saturday and Sunday, April 29-May 1.

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 between 4:30 p.m. and 6:30 p.m. (for the 5K) and Sunday between 5 a.m. and 12:30 p.m. (for the half and full marathons). 

A complete list of road closures and times can be found at

Schedule of Events
  • OC Lifestyle and Fitness Expo – Friday, April 29, 4 -8 p.m. & Saturday, April 30, 10 a.m.-5 p.m.
  • Kids Run the OC – Saturday, April 30, 8 a.m.-noon
  • Celebrate OC 5K – Saturday, April 30, 5 p.m.(Finish Line Festival is 1-7 p.m.)
  • SDCCU OC Marathon start – Sunday, May 1, 5:30 a.m. (Finish Line Festival is 8 a.m.-noon)
  • SDCCU OC Half Marathon start -Sunday, May 1, 6:15 a.m. (Finish Line Festival is 8 a.m.-noon)
Visit for more information and registration fees. Admission to OC Lifestyle & Fitness Expo is free. Parking at OC Fair & Event Center is $10.

Media contact:
Roxi Fyad, Public Affairs Manager
[email protected]

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

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

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