| Billdal to Alenquer | 1,588.00 mi (2,555.64 km) |
| Billdal to Alfena | 1,444.58 mi (2,324.82 km) |
| Billdal to Alijo | 1,414.11 mi (2,275.78 km) |
| Billdal to Aljustrel | 1,635.08 mi (2,631.41 km) |
| Billdal to Almada | 1,614.01 mi (2,597.50 km) |
| Billdal to Almargem | 1,606.91 mi (2,586.07 km) |
| Billdal to Almeirim | 1,568.47 mi (2,524.21 km) |
| Billdal to Amadora | 1,612.78 mi (2,595.52 km) |
| Billdal to Amarante | 1,430.46 mi (2,302.10 km) |
| Billdal to Amares | 1,417.11 mi (2,280.61 km) |
| Billdal to Amora | 1,616.23 mi (2,601.06 km) |
| Billdal to Anadia | 1,489.71 mi (2,397.46 km) |
| Billdal to Angra do Heroismo | 2,181.64 mi (3,511.01 km) |
| Billdal to Ansiao | 1,520.57 mi (2,447.12 km) |
| Billdal to Anta | 1,460.88 mi (2,351.06 km) |
