| Costa Mesa to Ashtabula (Ohio) | 2,087.10 mi (3,358.86 km) |
| Costa Mesa to Ashwaubenon (Wisconsin) | 1,752.58 mi (2,820.51 km) |
| Costa Mesa to Aspen Hill (Maryland) | 2,282.61 mi (3,673.51 km) |
| Costa Mesa to Astoria (Oregon) | 918.91 mi (1,478.84 km) |
| Costa Mesa to Atascadero (California) | 201.52 mi (324.32 km) |
| Costa Mesa to Atascocita (Texas) | 1,354.97 mi (2,180.61 km) |
| Costa Mesa to Atchison (Kansas) | 1,322.98 mi (2,129.13 km) |
| Costa Mesa to Athens (Alabama) | 1,763.56 mi (2,838.18 km) |
| Costa Mesa to Athens (Georgia) | 1,973.76 mi (3,176.46 km) |
| Costa Mesa to Athens (Ohio) | 2,013.73 mi (3,240.78 km) |
| Costa Mesa to Athens (Tennessee) | 1,890.34 mi (3,042.21 km) |
| Costa Mesa to Athens (Texas) | 1,282.02 mi (2,063.21 km) |
| Costa Mesa to Atlanta (Georgia) | 1,916.22 mi (3,083.86 km) |
| Costa Mesa to Atlantic Beach (Florida) | 2,139.99 mi (3,443.98 km) |
| Costa Mesa to Atlantic City (New Jersey) | 2,421.62 mi (3,897.23 km) |
