| Potters Bar to Alenquer | 971.74 mi (1,563.87 km) |
| Potters Bar to Alfena | 823.33 mi (1,325.02 km) |
| Potters Bar to Alijo | 798.33 mi (1,284.79 km) |
| Potters Bar to Aljustrel | 1,028.00 mi (1,654.41 km) |
| Potters Bar to Almada | 998.23 mi (1,606.50 km) |
| Potters Bar to Almargem | 989.99 mi (1,593.23 km) |
| Potters Bar to Almeirim | 953.90 mi (1,535.15 km) |
| Potters Bar to Amadora | 996.44 mi (1,603.61 km) |
| Potters Bar to Amarante | 811.38 mi (1,305.79 km) |
| Potters Bar to Amares | 795.46 mi (1,280.17 km) |
| Potters Bar to Amora | 1,000.84 mi (1,610.70 km) |
| Potters Bar to Anadia | 871.74 mi (1,402.93 km) |
| Potters Bar to Angra do Heroismo | 1,580.81 mi (2,544.07 km) |
| Potters Bar to Ansiao | 904.45 mi (1,455.58 km) |
| Potters Bar to Anta | 839.95 mi (1,351.77 km) |
