| Rhyl to Cocentaina | 1,017.36 mi (1,637.29 km) |
| Rhyl to Coin | 1,152.33 mi (1,854.49 km) |
| Rhyl to Colindres | 685.70 mi (1,103.53 km) |
| Rhyl to Collado-Villalba | 876.98 mi (1,411.37 km) |
| Rhyl to Colmenar Viejo | 874.97 mi (1,408.13 km) |
| Rhyl to Colmenarejo | 882.00 mi (1,419.44 km) |
| Rhyl to Conil de la Frontera | 1,185.03 mi (1,907.12 km) |
| Rhyl to Consuegra | 957.59 mi (1,541.09 km) |
| Rhyl to Corbera de Llobregat | 859.97 mi (1,383.98 km) |
| Rhyl to Cordoba | 1,068.36 mi (1,719.36 km) |
| Rhyl to Coria del Rio | 1,114.93 mi (1,794.30 km) |
| Rhyl to Crevillente | 1,049.13 mi (1,688.42 km) |
| Rhyl to Cuarte de Huerva | 819.65 mi (1,319.10 km) |
| Rhyl to Cubellas | 870.40 mi (1,400.78 km) |
| Rhyl to Cuellar | 824.51 mi (1,326.92 km) |
