| South Portland to Alderwood Manor (Washington) | 2,476.17 mi (3,985.01 km) |
| South Portland to Aldine (Texas) | 1,670.52 mi (2,688.45 km) |
| South Portland to Alexander City (Alabama) | 1,122.43 mi (1,806.38 km) |
| South Portland to Alexandria (Louisiana) | 1,477.78 mi (2,378.27 km) |
| South Portland to Alexandria (Minnesota) | 1,235.48 mi (1,988.31 km) |
| South Portland to Alexandria (Virginia) | 484.78 mi (780.17 km) |
| South Portland to Algonquin (Illinois) | 916.22 mi (1,474.51 km) |
| South Portland to Alhambra (California) | 2,619.16 mi (4,215.14 km) |
| South Portland to Alice (Texas) | 1,891.08 mi (3,043.40 km) |
| South Portland to Aliso Viejo (California) | 2,615.97 mi (4,210.00 km) |
| South Portland to Allen (Texas) | 1,593.93 mi (2,565.19 km) |
| South Portland to Allen Park (Michigan) | 659.65 mi (1,061.61 km) |
| South Portland to Allendale (Michigan) | 787.47 mi (1,267.30 km) |
| South Portland to Allentown (Pennsylvania) | 338.45 mi (544.68 km) |
| South Portland to Alliance (Ohio) | 584.18 mi (940.15 km) |
