| Potters Bar to Arcos de Valdevez | 783.16 mi (1,260.38 km) |
| Potters Bar to Arcozelo | 837.28 mi (1,347.46 km) |
| Potters Bar to Arganil | 877.47 mi (1,412.15 km) |
| Potters Bar to Arouca | 836.16 mi (1,345.66 km) |
| Potters Bar to Arruda dos Vinhos | 977.03 mi (1,572.38 km) |
| Potters Bar to Aveiro | 863.88 mi (1,390.28 km) |
| Potters Bar to Aver-o-Mar | 818.66 mi (1,317.51 km) |
| Potters Bar to Aves | 805.69 mi (1,296.63 km) |
| Potters Bar to Azambuja | 967.55 mi (1,557.11 km) |
| Potters Bar to Baiao | 816.94 mi (1,314.74 km) |
| Potters Bar to Barcelos | 808.16 mi (1,300.60 km) |
| Potters Bar to Barreiro | 997.19 mi (1,604.83 km) |
| Potters Bar to Batalha | 929.09 mi (1,495.22 km) |
| Potters Bar to Beja | 1,015.28 mi (1,633.94 km) |
| Potters Bar to Belas | 994.57 mi (1,600.61 km) |
