| Holyhead to Trim | 90.47 mi (145.59 km) |
| Holyhead to Tuam | 174.27 mi (280.46 km) |
| Holyhead to Tullamore | 118.45 mi (190.62 km) |
| Holyhead to Waterford | 127.14 mi (204.62 km) |
| Holyhead to Wexford | 101.68 mi (163.63 km) |
| Holyhead to Wicklow | 62.37 mi (100.37 km) |
| Holyhead to Abano Terme | 917.48 mi (1,476.55 km) |
| Holyhead to Abbiategrasso | 816.39 mi (1,313.86 km) |
| Holyhead to Acate | 1,450.80 mi (2,334.83 km) |
| Holyhead to Acerra | 1,228.43 mi (1,976.96 km) |
| Holyhead to Aci Castello | 1,440.82 mi (2,318.78 km) |
| Holyhead to Aci Catena | 1,437.91 mi (2,314.09 km) |
| Holyhead to Aci Sant'Antonio | 1,437.39 mi (2,313.26 km) |
| Holyhead to Acireale | 1,438.00 mi (2,314.24 km) |
| Holyhead to Acquaviva delle Fonti | 1,315.88 mi (2,117.71 km) |
