| Costa Mesa to Ukiah (California) | 479.49 mi (771.67 km) |
| Costa Mesa to Union (Missouri) | 1,533.68 mi (2,468.22 km) |
| Costa Mesa to Union City (California) | 356.43 mi (573.62 km) |
| Costa Mesa to Union City (Georgia) | 1,910.14 mi (3,074.07 km) |
| Costa Mesa to Union City (New Jersey) | 2,437.70 mi (3,923.10 km) |
| Costa Mesa to Union City (Tennessee) | 1,637.79 mi (2,635.77 km) |
| Costa Mesa to Union Hill-Novelty Hill (Washington) | 991.48 mi (1,595.64 km) |
| Costa Mesa to Union Park (Florida) | 2,186.48 mi (3,518.79 km) |
| Costa Mesa to Uniondale (New York) | 2,460.75 mi (3,960.20 km) |
| Costa Mesa to Universal City (Texas) | 1,186.16 mi (1,908.94 km) |
| Costa Mesa to University (Florida) | 2,128.59 mi (3,425.63 km) |
| Costa Mesa to University City (Missouri) | 1,570.44 mi (2,527.38 km) |
| Costa Mesa to University Heights (Ohio) | 2,047.58 mi (3,295.26 km) |
| Costa Mesa to University of California-Santa Barbara (California) | 122.69 mi (197.44 km) |
| Costa Mesa to University Park (Texas) | 1,219.40 mi (1,962.44 km) |
