| Costa Mesa to University Place (Washington) | 966.79 mi (1,555.90 km) |
| Costa Mesa to Upland (California) | 34.38 mi (55.33 km) |
| Costa Mesa to Upper Arlington (Ohio) | 1,962.75 mi (3,158.75 km) |
| Costa Mesa to Upper Grand Lagoon (Florida) | 1,894.59 mi (3,049.05 km) |
| Costa Mesa to Upper Montclair (New Jersey) | 2,428.66 mi (3,908.55 km) |
| Costa Mesa to Urbana (Illinois) | 1,692.67 mi (2,724.09 km) |
| Costa Mesa to Urbana (Maryland) | 2,267.82 mi (3,649.70 km) |
| Costa Mesa to Urbana (Ohio) | 1,926.83 mi (3,100.94 km) |
| Costa Mesa to Urbandale (Iowa) | 1,424.27 mi (2,292.15 km) |
| Costa Mesa to Utica (New York) | 2,374.26 mi (3,821.00 km) |
| Costa Mesa to Uvalde (Texas) | 1,110.70 mi (1,787.49 km) |
| Costa Mesa to Vacaville (California) | 395.40 mi (636.34 km) |
| Costa Mesa to Vadnais Heights (Minnesota) | 1,533.37 mi (2,467.72 km) |
| Costa Mesa to Vail (Arizona) | 434.13 mi (698.66 km) |
| Costa Mesa to Valdosta (Georgia) | 2,023.59 mi (3,256.65 km) |
