| Opera to Busto Arsizio | 23.71 mi (38.15 km) |
| Opera to Busto Garolfo | 19.62 mi (31.57 km) |
| Opera to Cabras | 378.15 mi (608.58 km) |
| Opera to Cadelbosco di Sopra | 79.81 mi (128.45 km) |
| Opera to Cadoneghe | 131.83 mi (212.16 km) |
| Opera to Cagli | 211.40 mi (340.22 km) |
| Opera to Cagliari | 425.34 mi (684.52 km) |
| Opera to Cairo Montenotte | 82.33 mi (132.49 km) |
| Opera to Caivano | 399.14 mi (642.35 km) |
| Opera to Calcinaia | 136.20 mi (219.19 km) |
| Opera to Calcinato | 58.32 mi (93.86 km) |
| Opera to Calderara di Reno | 114.99 mi (185.05 km) |
| Opera to Caldogno | 111.33 mi (179.17 km) |
| Opera to Calenzano | 142.03 mi (228.58 km) |
| Opera to Calolziocorte | 30.64 mi (49.30 km) |
