| Opera to Cividale del Friuli | 209.24 mi (336.74 km) |
| Opera to Civita Castellana | 266.08 mi (428.21 km) |
| Opera to Civitanova Marche | 265.51 mi (427.30 km) |
| Opera to Civitavecchia | 260.91 mi (419.89 km) |
| Opera to Civitella in Val di Chiana | 183.54 mi (295.38 km) |
| Opera to Clusone | 49.48 mi (79.64 km) |
| Opera to Coccaglio | 38.94 mi (62.67 km) |
| Opera to Codigoro | 146.42 mi (235.64 km) |
| Opera to Codogno | 28.32 mi (45.57 km) |
| Opera to Codroipo | 185.99 mi (299.32 km) |
| Opera to Cogoleto | 74.13 mi (119.31 km) |
| Opera to Colle di Val d'Elsa | 166.52 mi (267.99 km) |
| Opera to Colle Salvetti | 138.12 mi (222.29 km) |
| Opera to Collecchio | 65.54 mi (105.48 km) |
| Opera to Colleferro | 315.83 mi (508.28 km) |
