| Costa Mesa to Anoka (Minnesota) | 1,523.29 mi (2,451.50 km) |
| Costa Mesa to Ansonia (Connecticut) | 2,485.98 mi (4,000.79 km) |
| Costa Mesa to Antelope (California) | 398.21 mi (640.85 km) |
| Costa Mesa to Anthem (Arizona) | 333.18 mi (536.21 km) |
| Costa Mesa to Antioch (California) | 368.79 mi (593.52 km) |
| Costa Mesa to Antioch (Illinois) | 1,722.60 mi (2,772.25 km) |
| Costa Mesa to Apache Junction (Arizona) | 367.77 mi (591.87 km) |
| Costa Mesa to Apex (North Carolina) | 2,207.70 mi (3,552.95 km) |
| Costa Mesa to Apollo Beach (Florida) | 2,137.82 mi (3,440.49 km) |
| Costa Mesa to Apopka (Florida) | 2,166.47 mi (3,486.60 km) |
| Costa Mesa to Apple Valley (California) | 72.23 mi (116.24 km) |
| Costa Mesa to Apple Valley (Minnesota) | 1,519.62 mi (2,445.60 km) |
| Costa Mesa to Appleton (Wisconsin) | 1,734.67 mi (2,791.69 km) |
| Costa Mesa to Arbutus (Maryland) | 2,302.86 mi (3,706.09 km) |
| Costa Mesa to Arcadia (California) | 33.07 mi (53.22 km) |
