Get ready for a day of fun and fitness at The OC Fair Fun Run, organized by The OC Marathon! On Sunday, August 10, 2025, participants will have the chance to run, walk, or skip their way through the vibrant atmosphere of the OC Fair in Costa Mesa, Orange. This exciting 5K event is perfect for individuals and families alike, offering a fantastic opportunity to enjoy the sights, sounds, and delicious tastes of the fair while getting active. Join fellow enthusiasts at the OC Fair & Event Center, located at 88 Fair Dr., Costa Mesa, CA, and make unforgettable memories. Don’t miss out on this lively celebration of health and community—mark your calendars for August 10th and get ready to #RunforFun!