| Holyhead to Cuenca | 922.34 mi (1,484.37 km) |
| Holyhead to Cuevas del Almanzora | 1,114.04 mi (1,792.87 km) |
| Holyhead to Cullera | 999.03 mi (1,607.78 km) |
| Holyhead to Culleredo | 713.31 mi (1,147.96 km) |
| Holyhead to Cunit | 886.09 mi (1,426.02 km) |
| Holyhead to Daganzo de Arriba | 883.74 mi (1,422.23 km) |
| Holyhead to Daimiel | 984.08 mi (1,583.72 km) |
| Holyhead to Don Benito | 993.50 mi (1,598.89 km) |
| Holyhead to Donostia | 700.73 mi (1,127.71 km) |
| Holyhead to Dos Hermanas | 1,108.97 mi (1,784.72 km) |
| Holyhead to Durango | 706.58 mi (1,137.12 km) |
| Holyhead to Ecija | 1,090.21 mi (1,754.52 km) |
| Holyhead to Ejea de los Caballeros | 789.11 mi (1,269.95 km) |
| Holyhead to El Alamo | 904.13 mi (1,455.05 km) |
| Holyhead to El Arahal | 1,109.29 mi (1,785.23 km) |
