| Castle Rock to Cocentaina | 5,230.42 mi (8,417.55 km) |
| Castle Rock to Coin | 5,135.80 mi (8,265.27 km) |
| Castle Rock to Colindres | 4,908.84 mi (7,900.01 km) |
| Castle Rock to Collado-Villalba | 5,000.73 mi (8,047.89 km) |
| Castle Rock to Colmenar Viejo | 5,009.78 mi (8,062.46 km) |
| Castle Rock to Colmenarejo | 5,003.40 mi (8,052.19 km) |
| Castle Rock to Conil de la Frontera | 5,093.87 mi (8,197.80 km) |
| Castle Rock to Consuegra | 5,066.81 mi (8,154.24 km) |
| Castle Rock to Corbera de Llobregat | 5,208.76 mi (8,382.69 km) |
| Castle Rock to Cordoba | 5,083.13 mi (8,180.51 km) |
| Castle Rock to Coria del Rio | 5,052.92 mi (8,131.89 km) |
| Castle Rock to Crevillente | 5,236.78 mi (8,427.78 km) |
| Castle Rock to Cuarte de Huerva | 5,087.48 mi (8,187.51 km) |
| Castle Rock to Cubellas | 5,207.72 mi (8,381.02 km) |
| Castle Rock to Cuellar | 4,956.09 mi (7,976.05 km) |
