| Somma Lombardo to Cartagena | 748.45 mi (1,204.52 km) |
| Somma Lombardo to Cartama | 927.58 mi (1,492.79 km) |
| Somma Lombardo to Cartaya | 1,002.00 mi (1,612.56 km) |
| Somma Lombardo to Caspe | 534.65 mi (860.43 km) |
| Somma Lombardo to Cassa de la Selva | 391.17 mi (629.52 km) |
| Somma Lombardo to Castalla | 684.83 mi (1,102.12 km) |
| Somma Lombardo to Castellbisbal | 444.17 mi (714.82 km) |
| Somma Lombardo to Castelldefels | 453.77 mi (730.27 km) |
| Somma Lombardo to Castello de Ampurias | 366.24 mi (589.40 km) |
| Somma Lombardo to Castellon de la Plana | 591.74 mi (952.32 km) |
| Somma Lombardo to Castilleja de la Cuesta | 951.86 mi (1,531.87 km) |
| Somma Lombardo to Catarroja | 634.15 mi (1,020.56 km) |
| Somma Lombardo to Catral | 712.46 mi (1,146.60 km) |
| Somma Lombardo to Caudete | 690.75 mi (1,111.66 km) |
| Somma Lombardo to Cehegin | 751.59 mi (1,209.56 km) |
