| Alton to Carmona | 972.53 mi (1,565.14 km) |
| Alton to Cartagena | 936.20 mi (1,506.67 km) |
| Alton to Cartama | 1,013.70 mi (1,631.39 km) |
| Alton to Cartaya | 1,004.77 mi (1,617.02 km) |
| Alton to Caspe | 686.63 mi (1,105.03 km) |
| Alton to Cassa de la Selva | 665.28 mi (1,070.66 km) |
| Alton to Castalla | 867.46 mi (1,396.05 km) |
| Alton to Castellbisbal | 682.95 mi (1,099.11 km) |
| Alton to Castelldefels | 696.25 mi (1,120.51 km) |
| Alton to Castello de Ampurias | 643.39 mi (1,035.43 km) |
| Alton to Castellon de la Plana | 772.88 mi (1,243.82 km) |
| Alton to Castilleja de la Cuesta | 983.13 mi (1,582.19 km) |
| Alton to Catarroja | 812.11 mi (1,306.96 km) |
| Alton to Catral | 897.59 mi (1,444.53 km) |
| Alton to Caudete | 859.89 mi (1,383.87 km) |
