| Royston to Carmona | 1,043.58 mi (1,679.48 km) |
| Royston to Cartagena | 999.29 mi (1,608.20 km) |
| Royston to Cartama | 1,083.22 mi (1,743.27 km) |
| Royston to Cartaya | 1,077.29 mi (1,733.73 km) |
| Royston to Caspe | 747.16 mi (1,202.44 km) |
| Royston to Cassa de la Selva | 714.83 mi (1,150.40 km) |
| Royston to Castalla | 929.86 mi (1,496.46 km) |
| Royston to Castellbisbal | 736.39 mi (1,185.11 km) |
| Royston to Castelldefels | 749.86 mi (1,206.78 km) |
| Royston to Castello de Ampurias | 691.63 mi (1,113.08 km) |
| Royston to Castellon de la Plana | 833.54 mi (1,341.46 km) |
| Royston to Castilleja de la Cuesta | 1,054.62 mi (1,697.25 km) |
| Royston to Catarroja | 873.83 mi (1,406.29 km) |
| Royston to Catral | 960.29 mi (1,545.45 km) |
| Royston to Caudete | 923.07 mi (1,485.53 km) |
