| Holyhead to Argentona | 875.09 mi (1,408.32 km) |
| Holyhead to Arico el Nuevo | 1,837.65 mi (2,957.42 km) |
| Holyhead to Armilla | 1,117.54 mi (1,798.51 km) |
| Holyhead to Arnedo | 775.25 mi (1,247.64 km) |
| Holyhead to Arona | 1,846.76 mi (2,972.08 km) |
| Holyhead to Arrecife | 1,741.87 mi (2,803.27 km) |
| Holyhead to Arrigorriaga | 702.48 mi (1,130.53 km) |
| Holyhead to Arroyomolinos | 901.79 mi (1,451.29 km) |
| Holyhead to Arteijo | 713.58 mi (1,148.40 km) |
| Holyhead to Arucas | 1,826.78 mi (2,939.92 km) |
| Holyhead to Aspe | 1,050.08 mi (1,689.94 km) |
| Holyhead to Astorga | 752.55 mi (1,211.12 km) |
| Holyhead to Atarfe | 1,112.36 mi (1,790.17 km) |
| Holyhead to Avila | 874.66 mi (1,407.62 km) |
| Holyhead to Aviles | 676.36 mi (1,088.50 km) |
