| Hwlffordd to Cocentaina | 928.04 mi (1,493.54 km) |
| Hwlffordd to Coin | 1,045.67 mi (1,682.84 km) |
| Hwlffordd to Colindres | 584.89 mi (941.29 km) |
| Hwlffordd to Collado-Villalba | 772.89 mi (1,243.85 km) |
| Hwlffordd to Colmenar Viejo | 771.90 mi (1,242.25 km) |
| Hwlffordd to Colmenarejo | 777.87 mi (1,251.86 km) |
| Hwlffordd to Conil de la Frontera | 1,074.64 mi (1,729.46 km) |
| Hwlffordd to Consuegra | 854.98 mi (1,375.96 km) |
| Hwlffordd to Corbera de Llobregat | 787.80 mi (1,267.84 km) |
| Hwlffordd to Cordoba | 961.51 mi (1,547.40 km) |
| Hwlffordd to Coria del Rio | 1,004.39 mi (1,616.40 km) |
| Hwlffordd to Crevillente | 957.70 mi (1,541.27 km) |
| Hwlffordd to Cuarte de Huerva | 731.28 mi (1,176.88 km) |
| Hwlffordd to Cubellas | 796.19 mi (1,281.34 km) |
| Hwlffordd to Cuellar | 719.18 mi (1,157.40 km) |
