| Opera to Cartagena | 752.36 mi (1,210.80 km) |
| Opera to Cartama | 935.57 mi (1,505.65 km) |
| Opera to Cartaya | 1,013.94 mi (1,631.78 km) |
| Opera to Caspe | 545.84 mi (878.44 km) |
| Opera to Cassa de la Selva | 398.38 mi (641.13 km) |
| Opera to Castalla | 690.20 mi (1,110.77 km) |
| Opera to Castellbisbal | 452.06 mi (727.52 km) |
| Opera to Castelldefels | 460.96 mi (741.85 km) |
| Opera to Castello de Ampurias | 374.49 mi (602.68 km) |
| Opera to Castellon de la Plana | 599.28 mi (964.45 km) |
| Opera to Castilleja de la Cuesta | 962.75 mi (1,549.40 km) |
| Opera to Catarroja | 640.90 mi (1,031.42 km) |
| Opera to Catral | 717.16 mi (1,154.15 km) |
| Opera to Caudete | 696.95 mi (1,121.63 km) |
| Opera to Cehegin | 757.89 mi (1,219.70 km) |
