| Hemel Hempstead to Carmona | 1,018.56 mi (1,639.22 km) |
| Hemel Hempstead to Cartagena | 978.17 mi (1,574.21 km) |
| Hemel Hempstead to Cartama | 1,059.02 mi (1,704.33 km) |
| Hemel Hempstead to Cartaya | 1,051.42 mi (1,692.09 km) |
| Hemel Hempstead to Caspe | 727.11 mi (1,170.16 km) |
| Hemel Hempstead to Cassa de la Selva | 699.38 mi (1,125.55 km) |
| Hemel Hempstead to Castalla | 909.04 mi (1,462.95 km) |
| Hemel Hempstead to Castellbisbal | 719.35 mi (1,157.69 km) |
| Hemel Hempstead to Castelldefels | 732.76 mi (1,179.26 km) |
| Hemel Hempstead to Castello de Ampurias | 676.70 mi (1,089.05 km) |
| Hemel Hempstead to Castellon de la Plana | 813.46 mi (1,309.14 km) |
| Hemel Hempstead to Castilleja de la Cuesta | 1,029.36 mi (1,656.59 km) |
| Hemel Hempstead to Catarroja | 853.29 mi (1,373.24 km) |
| Hemel Hempstead to Catral | 939.34 mi (1,511.72 km) |
| Hemel Hempstead to Caudete | 901.89 mi (1,451.45 km) |
