| Costa Mesa to Allison Park (Pennsylvania) | 2,127.40 mi (3,423.72 km) |
| Costa Mesa to Allouez (Wisconsin) | 1,755.45 mi (2,825.13 km) |
| Costa Mesa to Aloha (Oregon) | 858.22 mi (1,381.16 km) |
| Costa Mesa to Alpena (Michigan) | 1,983.92 mi (3,192.81 km) |
| Costa Mesa to Alpharetta (Georgia) | 1,921.28 mi (3,092.00 km) |
| Costa Mesa to Alpine (California) | 87.66 mi (141.08 km) |
| Costa Mesa to Alpine (Utah) | 578.56 mi (931.10 km) |
| Costa Mesa to Alsip (Illinois) | 1,730.15 mi (2,784.41 km) |
| Costa Mesa to Altadena (California) | 38.49 mi (61.94 km) |
| Costa Mesa to Altamont (Oregon) | 624.79 mi (1,005.51 km) |
| Costa Mesa to Altamonte Springs (Florida) | 2,175.18 mi (3,500.62 km) |
| Costa Mesa to Alton (Illinois) | 1,581.34 mi (2,544.91 km) |
| Costa Mesa to Alton (Texas) | 1,276.44 mi (2,054.23 km) |
| Costa Mesa to Altoona (Iowa) | 1,439.56 mi (2,316.75 km) |
| Costa Mesa to Altoona (Pennsylvania) | 2,209.28 mi (3,555.50 km) |
