| Holyhead to Irun | 701.08 mi (1,128.27 km) |
| Holyhead to Isla-Cristina | 1,120.53 mi (1,803.32 km) |
| Holyhead to Jaca | 766.70 mi (1,233.89 km) |
| Holyhead to Jaen | 1,074.66 mi (1,729.50 km) |
| Holyhead to Jerez de la Frontera | 1,151.12 mi (1,852.55 km) |
| Holyhead to Jerez de los Caballeros | 1,040.60 mi (1,674.69 km) |
| Holyhead to Jodar | 1,071.02 mi (1,723.64 km) |
| Holyhead to Jumilla | 1,036.63 mi (1,668.29 km) |
| Holyhead to La Algaba | 1,097.70 mi (1,766.58 km) |
| Holyhead to La Baneza | 763.06 mi (1,228.03 km) |
| Holyhead to La Carlota | 1,080.87 mi (1,739.50 km) |
| Holyhead to La Carolina | 1,040.45 mi (1,674.44 km) |
| Holyhead to La Corredoria | 687.80 mi (1,106.91 km) |
| Holyhead to La Eliana | 969.04 mi (1,559.51 km) |
| Holyhead to La Escala | 852.49 mi (1,371.94 km) |
