| Watertown Town to Alenquer | 3,190.12 mi (5,134.00 km) |
| Watertown Town to Alfena | 3,151.77 mi (5,072.29 km) |
| Watertown Town to Alijo | 3,200.75 mi (5,151.11 km) |
| Watertown Town to Aljustrel | 3,265.51 mi (5,255.33 km) |
| Watertown Town to Almada | 3,194.12 mi (5,140.44 km) |
| Watertown Town to Almargem | 3,183.68 mi (5,123.63 km) |
| Watertown Town to Almeirim | 3,205.14 mi (5,158.18 km) |
| Watertown Town to Amadora | 3,188.90 mi (5,132.04 km) |
| Watertown Town to Amarante | 3,172.85 mi (5,106.21 km) |
| Watertown Town to Amares | 3,150.61 mi (5,070.42 km) |
| Watertown Town to Amora | 3,197.64 mi (5,146.10 km) |
| Watertown Town to Anadia | 3,178.53 mi (5,115.36 km) |
| Watertown Town to Angra do Heroismo | 2,297.69 mi (3,697.78 km) |
| Watertown Town to Ansiao | 3,193.23 mi (5,139.00 km) |
| Watertown Town to Anta | 3,153.35 mi (5,074.83 km) |
