| Holyhead to Ames | 742.19 mi (1,194.45 km) |
| Holyhead to Amorebieta | 702.52 mi (1,130.60 km) |
| Holyhead to Amposta | 903.85 mi (1,454.60 km) |
| Holyhead to Amurrio | 712.56 mi (1,146.75 km) |
| Holyhead to Andoain | 707.49 mi (1,138.60 km) |
| Holyhead to Andraitx | 1,005.43 mi (1,618.08 km) |
| Holyhead to Andujar | 1,055.41 mi (1,698.51 km) |
| Holyhead to Antequera | 1,125.58 mi (1,811.45 km) |
| Holyhead to Antigua | 1,784.86 mi (2,872.46 km) |
| Holyhead to Aranda de Duero | 804.46 mi (1,294.66 km) |
| Holyhead to Aranjuez | 918.54 mi (1,478.24 km) |
| Holyhead to Archena | 1,061.75 mi (1,708.73 km) |
| Holyhead to Arcos de la Frontera | 1,145.49 mi (1,843.50 km) |
| Holyhead to Arenys de Mar | 875.96 mi (1,409.73 km) |
| Holyhead to Arenys de Munt | 873.78 mi (1,406.22 km) |
