| Shanklin to Arcos de Valdevez | 698.04 mi (1,123.38 km) |
| Shanklin to Arcozelo | 752.10 mi (1,210.39 km) |
| Shanklin to Arganil | 792.35 mi (1,275.16 km) |
| Shanklin to Arouca | 750.96 mi (1,208.55 km) |
| Shanklin to Arruda dos Vinhos | 891.86 mi (1,435.31 km) |
| Shanklin to Aveiro | 778.68 mi (1,253.17 km) |
| Shanklin to Aver-o-Mar | 733.55 mi (1,180.53 km) |
| Shanklin to Aves | 720.50 mi (1,159.54 km) |
| Shanklin to Azambuja | 882.39 mi (1,420.07 km) |
| Shanklin to Baiao | 731.75 mi (1,177.64 km) |
| Shanklin to Barcelos | 723.02 mi (1,163.60 km) |
| Shanklin to Barreiro | 912.04 mi (1,467.79 km) |
| Shanklin to Batalha | 843.90 mi (1,358.13 km) |
| Shanklin to Beja | 930.61 mi (1,497.68 km) |
| Shanklin to Belas | 909.39 mi (1,463.52 km) |
