| Southborough to Alenquer | 949.56 mi (1,528.17 km) |
| Southborough to Alfena | 802.87 mi (1,292.10 km) |
| Southborough to Alijo | 775.70 mi (1,248.37 km) |
| Southborough to Aljustrel | 1,003.26 mi (1,614.58 km) |
| Southborough to Almada | 975.93 mi (1,570.61 km) |
| Southborough to Almargem | 968.06 mi (1,557.94 km) |
| Southborough to Almeirim | 931.14 mi (1,498.52 km) |
| Southborough to Amadora | 974.32 mi (1,568.02 km) |
| Southborough to Amarante | 790.00 mi (1,271.38 km) |
| Southborough to Amares | 775.15 mi (1,247.48 km) |
| Southborough to Amora | 978.41 mi (1,574.60 km) |
| Southborough to Anadia | 850.02 mi (1,367.98 km) |
| Southborough to Angra do Heroismo | 1,583.90 mi (2,549.05 km) |
| Southborough to Ansiao | 882.13 mi (1,419.65 km) |
| Southborough to Anta | 819.37 mi (1,318.66 km) |
