| Half Moon Bay to Cocentaina | 6,009.63 mi (9,671.57 km) |
| Half Moon Bay to Coin | 5,951.18 mi (9,577.50 km) |
| Half Moon Bay to Colindres | 5,668.57 mi (9,122.67 km) |
| Half Moon Bay to Collado-Villalba | 5,784.46 mi (9,309.19 km) |
| Half Moon Bay to Colmenar Viejo | 5,792.12 mi (9,321.51 km) |
| Half Moon Bay to Colmenarejo | 5,787.71 mi (9,314.42 km) |
| Half Moon Bay to Conil de la Frontera | 5,918.16 mi (9,524.36 km) |
| Half Moon Bay to Consuegra | 5,857.13 mi (9,426.14 km) |
| Half Moon Bay to Corbera de Llobregat | 5,955.26 mi (9,584.07 km) |
| Half Moon Bay to Cordoba | 5,890.35 mi (9,479.61 km) |
| Half Moon Bay to Coria del Rio | 5,870.26 mi (9,447.27 km) |
| Half Moon Bay to Crevillente | 6,021.48 mi (9,690.63 km) |
| Half Moon Bay to Cuarte de Huerva | 5,848.24 mi (9,411.83 km) |
| Half Moon Bay to Cubellas | 5,957.24 mi (9,587.24 km) |
| Half Moon Bay to Cuellar | 5,735.58 mi (9,230.53 km) |
