| Prestonpans to Alenquer | 1,200.92 mi (1,932.70 km) |
| Prestonpans to Alfena | 1,047.62 mi (1,685.98 km) |
| Prestonpans to Alijo | 1,034.72 mi (1,665.22 km) |
| Prestonpans to Aljustrel | 1,269.72 mi (2,043.42 km) |
| Prestonpans to Almada | 1,227.47 mi (1,975.42 km) |
| Prestonpans to Almargem | 1,217.37 mi (1,959.17 km) |
| Prestonpans to Almeirim | 1,186.63 mi (1,909.70 km) |
| Prestonpans to Amadora | 1,224.69 mi (1,970.94 km) |
| Prestonpans to Amarante | 1,040.93 mi (1,675.21 km) |
| Prestonpans to Amares | 1,019.97 mi (1,641.48 km) |
| Prestonpans to Amora | 1,230.69 mi (1,980.61 km) |
| Prestonpans to Anadia | 1,101.12 mi (1,772.09 km) |
| Prestonpans to Angra do Heroismo | 1,632.65 mi (2,627.50 km) |
| Prestonpans to Ansiao | 1,136.16 mi (1,828.47 km) |
| Prestonpans to Anta | 1,064.29 mi (1,712.82 km) |
