| South Portland to Allison Park (Pennsylvania) | 538.48 mi (866.60 km) |
| South Portland to Allouez (Wisconsin) | 880.94 mi (1,417.74 km) |
| South Portland to Aloha (Oregon) | 2,544.96 mi (4,095.72 km) |
| South Portland to Alpena (Michigan) | 656.56 mi (1,056.64 km) |
| South Portland to Alpharetta (Georgia) | 998.79 mi (1,607.41 km) |
| South Portland to Alpine (California) | 2,592.93 mi (4,172.92 km) |
| South Portland to Alpine (Utah) | 2,117.42 mi (3,407.67 km) |
| South Portland to Alsip (Illinois) | 895.22 mi (1,440.71 km) |
| South Portland to Altadena (California) | 2,615.47 mi (4,209.19 km) |
| South Portland to Altamont (Oregon) | 2,562.28 mi (4,123.58 km) |
| South Portland to Altamonte Springs (Florida) | 1,203.16 mi (1,936.29 km) |
| South Portland to Alton (Illinois) | 1,078.92 mi (1,736.36 km) |
| South Portland to Alton (Texas) | 1,972.03 mi (3,173.67 km) |
| South Portland to Altoona (Iowa) | 1,182.65 mi (1,903.29 km) |
| South Portland to Altoona (Pennsylvania) | 468.35 mi (753.74 km) |
