| Hard to Cartagena | 871.21 mi (1,402.08 km) |
| Hard to Cartama | 1,042.48 mi (1,677.70 km) |
| Hard to Cartaya | 1,107.50 mi (1,782.35 km) |
| Hard to Caspe | 645.27 mi (1,038.46 km) |
| Hard to Cassa de la Selva | 511.25 mi (822.78 km) |
| Hard to Castalla | 805.53 mi (1,296.38 km) |
| Hard to Castellbisbal | 562.42 mi (905.14 km) |
| Hard to Castelldefels | 573.11 mi (922.33 km) |
| Hard to Castello de Ampurias | 484.97 mi (780.49 km) |
| Hard to Castellon de la Plana | 709.26 mi (1,141.44 km) |
| Hard to Castilleja de la Cuesta | 1,060.21 mi (1,706.24 km) |
| Hard to Catarroja | 752.79 mi (1,211.49 km) |
| Hard to Catral | 834.14 mi (1,342.43 km) |
| Hard to Caudete | 810.05 mi (1,303.66 km) |
| Hard to Cehegin | 870.41 mi (1,400.79 km) |
