| Slough to Arcos de Valdevez | 762.78 mi (1,227.58 km) |
| Slough to Arcozelo | 817.03 mi (1,314.88 km) |
| Slough to Arganil | 857.75 mi (1,380.41 km) |
| Slough to Arouca | 816.13 mi (1,313.44 km) |
| Slough to Arruda dos Vinhos | 957.14 mi (1,540.37 km) |
| Slough to Aveiro | 843.75 mi (1,357.88 km) |
| Slough to Aver-o-Mar | 798.26 mi (1,284.67 km) |
| Slough to Aves | 785.49 mi (1,264.12 km) |
| Slough to Azambuja | 947.73 mi (1,525.22 km) |
| Slough to Baiao | 796.96 mi (1,282.58 km) |
| Slough to Barcelos | 787.79 mi (1,267.82 km) |
| Slough to Barreiro | 977.38 mi (1,572.95 km) |
| Slough to Batalha | 909.15 mi (1,463.14 km) |
| Slough to Beja | 996.22 mi (1,603.26 km) |
| Slough to Belas | 974.64 mi (1,568.53 km) |
