| Hemel Hempstead to Cocentaina | 898.74 mi (1,446.38 km) |
| Hemel Hempstead to Coin | 1,063.20 mi (1,711.06 km) |
| Hemel Hempstead to Colindres | 593.67 mi (955.42 km) |
| Hemel Hempstead to Collado-Villalba | 786.45 mi (1,265.67 km) |
| Hemel Hempstead to Colmenar Viejo | 782.33 mi (1,259.03 km) |
| Hemel Hempstead to Colmenarejo | 791.45 mi (1,273.72 km) |
| Hemel Hempstead to Conil de la Frontera | 1,104.91 mi (1,778.19 km) |
| Hemel Hempstead to Consuegra | 862.42 mi (1,387.94 km) |
| Hemel Hempstead to Corbera de Llobregat | 723.06 mi (1,163.66 km) |
| Hemel Hempstead to Cordoba | 980.76 mi (1,578.38 km) |
| Hemel Hempstead to Coria del Rio | 1,036.08 mi (1,667.40 km) |
| Hemel Hempstead to Crevillente | 933.18 mi (1,501.81 km) |
| Hemel Hempstead to Cuarte de Huerva | 702.95 mi (1,131.28 km) |
| Hemel Hempstead to Cubellas | 735.44 mi (1,183.57 km) |
| Hemel Hempstead to Cuellar | 737.90 mi (1,187.53 km) |
