| Rapid City to Cocentaina | 4,964.95 mi (7,990.31 km) |
| Rapid City to Coin | 4,885.08 mi (7,861.78 km) |
| Rapid City to Colindres | 4,635.53 mi (7,460.16 km) |
| Rapid City to Collado-Villalba | 4,736.43 mi (7,622.55 km) |
| Rapid City to Colmenar Viejo | 4,744.96 mi (7,636.28 km) |
| Rapid City to Colmenarejo | 4,739.33 mi (7,627.21 km) |
| Rapid City to Conil de la Frontera | 4,847.23 mi (7,800.86 km) |
| Rapid City to Consuegra | 4,805.26 mi (7,733.32 km) |
| Rapid City to Corbera de Llobregat | 4,931.82 mi (7,936.99 km) |
| Rapid City to Cordoba | 4,828.67 mi (7,770.99 km) |
| Rapid City to Coria del Rio | 4,802.93 mi (7,729.57 km) |
| Rapid City to Crevillente | 4,973.42 mi (8,003.94 km) |
| Rapid City to Cuarte de Huerva | 4,814.99 mi (7,748.98 km) |
| Rapid City to Cubellas | 4,931.75 mi (7,936.89 km) |
| Rapid City to Cuellar | 4,690.05 mi (7,547.91 km) |
