| Williamstown to Alenquer | 3,439.31 mi (5,535.04 km) |
| Williamstown to Alfena | 3,406.10 mi (5,481.59 km) |
| Williamstown to Alijo | 3,455.82 mi (5,561.61 km) |
| Williamstown to Aljustrel | 3,512.78 mi (5,653.28 km) |
| Williamstown to Almada | 3,442.34 mi (5,539.91 km) |
| Williamstown to Almargem | 3,432.19 mi (5,523.58 km) |
| Williamstown to Almeirim | 3,454.99 mi (5,560.27 km) |
| Williamstown to Amadora | 3,437.18 mi (5,531.60 km) |
| Williamstown to Amarante | 3,427.53 mi (5,516.07 km) |
| Williamstown to Amares | 3,405.83 mi (5,481.16 km) |
| Williamstown to Amora | 3,445.76 mi (5,545.41 km) |
| Williamstown to Anadia | 3,431.23 mi (5,522.03 km) |
| Williamstown to Angra do Heroismo | 2,528.63 mi (4,069.43 km) |
| Williamstown to Ansiao | 3,444.81 mi (5,543.88 km) |
| Williamstown to Anta | 3,407.13 mi (5,483.25 km) |
