how far is the ocean from costa mesa
Driving distance from Costa Mesa, CA to Oceanside, CA. The total driving distance from Costa Mesa, CA to Oceanside, CA is 51 miles or 82 kilometers. Your trip begins in Costa Mesa, California. It ends in Oceanside, California. If you are planning a road trip, you might also want to calculate the total driving time from Costa Mesa, CA to Oceanside, CA so you can see when you'll arrive at your destination.