| Opera to Cassina de' Pecchi | 11.74 mi (18.89 km) |
| Opera to Cassino | 354.32 mi (570.22 km) |
| Opera to Castagneto Carducci | 167.74 mi (269.95 km) |
| Opera to Castano Primo | 24.66 mi (39.69 km) |
| Opera to Castel Bolognese | 146.42 mi (235.65 km) |
| Opera to Castel Gandolfo | 304.41 mi (489.90 km) |
| Opera to Castel Goffredo | 61.39 mi (98.80 km) |
| Opera to Castel Maggiore | 119.27 mi (191.95 km) |
| Opera to Castel Mella | 45.96 mi (73.96 km) |
| Opera to Castel San Giorgio | 421.19 mi (677.85 km) |
| Opera to Castel San Giovanni | 25.33 mi (40.76 km) |
| Opera to Castel San Pietro Terme | 134.29 mi (216.11 km) |
| Opera to Castel Volturno | 381.49 mi (613.95 km) |
| Opera to Castelbuono | 572.88 mi (921.96 km) |
| Opera to Casteldaccia | 553.22 mi (890.32 km) |
