| Holyhead to Arcos de Valdevez | 811.05 mi (1,305.26 km) |
| Holyhead to Arcozelo | 866.93 mi (1,395.19 km) |
| Holyhead to Arganil | 918.60 mi (1,478.35 km) |
| Holyhead to Arouca | 871.45 mi (1,402.46 km) |
| Holyhead to Arruda dos Vinhos | 1,011.81 mi (1,628.35 km) |
| Holyhead to Aveiro | 895.68 mi (1,441.46 km) |
| Holyhead to Aver-o-Mar | 844.67 mi (1,359.36 km) |
| Holyhead to Aves | 837.54 mi (1,347.88 km) |
| Holyhead to Azambuja | 1,004.21 mi (1,616.13 km) |
| Holyhead to Baiao | 853.73 mi (1,373.94 km) |
| Holyhead to Barcelos | 835.45 mi (1,344.53 km) |
| Holyhead to Barreiro | 1,033.32 mi (1,662.97 km) |
| Holyhead to Batalha | 963.92 mi (1,551.28 km) |
| Holyhead to Beja | 1,066.76 mi (1,716.79 km) |
| Holyhead to Belas | 1,027.97 mi (1,654.35 km) |
