| South Portland to Aberaman | 3,048.75 mi (4,906.50 km) |
| South Portland to Aberbargoed | 3,057.38 mi (4,920.38 km) |
| South Portland to Aberdare | 3,048.01 mi (4,905.30 km) |
| South Portland to Aberdeen | 3,004.20 mi (4,834.80 km) |
| South Portland to Abergavenny | 3,063.25 mi (4,929.83 km) |
| South Portland to Abergele | 3,012.30 mi (4,847.82 km) |
| South Portland to Abertawe | 3,029.25 mi (4,875.11 km) |
| South Portland to Abertillery | 3,060.55 mi (4,925.48 km) |
| South Portland to Aberystwyth | 3,008.34 mi (4,841.46 km) |
| South Portland to Abingdon | 3,137.19 mi (5,048.81 km) |
| South Portland to Abram | 3,047.42 mi (4,904.36 km) |
| South Portland to Accrington | 3,051.66 mi (4,911.17 km) |
| South Portland to Acomb | 3,096.31 mi (4,983.03 km) |
| South Portland to Acton | 3,181.74 mi (5,120.52 km) |
| South Portland to Addlestone | 3,176.08 mi (5,111.40 km) |
