| South Portland to Amersham | 3,164.59 mi (5,092.91 km) |
| South Portland to Amesbury | 3,127.69 mi (5,033.53 km) |
| South Portland to Ammanford | 3,023.84 mi (4,866.40 km) |
| South Portland to Ampthill | 3,161.41 mi (5,087.80 km) |
| South Portland to Andover | 3,139.23 mi (5,052.10 km) |
| South Portland to Annan | 2,994.86 mi (4,819.76 km) |
| South Portland to Antrim | 2,885.08 mi (4,643.08 km) |
| South Portland to Appleton | 3,052.14 mi (4,911.94 km) |
| South Portland to Appley Bridge | 3,040.84 mi (4,893.76 km) |
| South Portland to Arbroath | 2,995.51 mi (4,820.81 km) |
| South Portland to Ardrossan | 2,925.46 mi (4,708.07 km) |
| South Portland to Armadale | 2,963.64 mi (4,769.52 km) |
| South Portland to Armthorpe | 3,107.45 mi (5,000.96 km) |
| South Portland to Arnold | 3,115.20 mi (5,013.43 km) |
| South Portland to Ascot | 3,167.84 mi (5,098.14 km) |
