| Risca to Carmona | 984.90 mi (1,585.04 km) |
| Risca to Cartagena | 973.30 mi (1,566.37 km) |
| Risca to Cartama | 1,032.02 mi (1,660.87 km) |
| Risca to Cartaya | 1,009.38 mi (1,624.44 km) |
| Risca to Caspe | 731.29 mi (1,176.90 km) |
| Risca to Cassa de la Selva | 727.86 mi (1,171.38 km) |
| Risca to Castalla | 906.58 mi (1,458.99 km) |
| Risca to Castellbisbal | 739.90 mi (1,190.76 km) |
| Risca to Castelldefels | 752.81 mi (1,211.54 km) |
| Risca to Castello de Ampurias | 707.86 mi (1,139.20 km) |
| Risca to Castellon de la Plana | 816.41 mi (1,313.88 km) |
| Risca to Castilleja de la Cuesta | 993.38 mi (1,598.68 km) |
| Risca to Catarroja | 853.12 mi (1,372.96 km) |
| Risca to Catral | 935.80 mi (1,506.02 km) |
| Risca to Caudete | 897.32 mi (1,444.10 km) |
