| Opera to Campos del Puerto | 518.42 mi (834.32 km) |
| Opera to Canals | 669.05 mi (1,076.73 km) |
| Opera to Candelaria | 1,825.60 mi (2,938.02 km) |
| Opera to Canet de Mar | 423.13 mi (680.95 km) |
| Opera to Cangas | 920.60 mi (1,481.56 km) |
| Opera to Cangas de Narcea | 792.89 mi (1,276.03 km) |
| Opera to Canovellas | 433.91 mi (698.31 km) |
| Opera to Canteras | 753.96 mi (1,213.38 km) |
| Opera to Cantillana | 943.35 mi (1,518.17 km) |
| Opera to Capdepera | 490.50 mi (789.39 km) |
| Opera to Carballo | 895.78 mi (1,441.61 km) |
| Opera to Carcagente | 656.04 mi (1,055.79 km) |
| Opera to Cardedeu | 429.79 mi (691.68 km) |
| Opera to Carlet | 653.81 mi (1,052.21 km) |
| Opera to Carmona | 941.53 mi (1,515.25 km) |
