| Opoczno to Corato | 730.34 mi (1,175.37 km) |
| Opoczno to Corbetta | 661.00 mi (1,063.78 km) |
| Opoczno to Corciano | 681.25 mi (1,096.36 km) |
| Opoczno to Cordenons | 508.09 mi (817.69 km) |
| Opoczno to Cori | 757.49 mi (1,219.06 km) |
| Opoczno to Coriano | 623.81 mi (1,003.92 km) |
| Opoczno to Corigliano Calabro | 833.67 mi (1,341.67 km) |
| Opoczno to Corleone | 996.88 mi (1,604.33 km) |
| Opoczno to Cormano | 648.18 mi (1,043.14 km) |
| Opoczno to Cornaredo | 655.28 mi (1,054.57 km) |
| Opoczno to Cornate d'Adda | 632.82 mi (1,018.42 km) |
| Opoczno to Cornedo Vicentino | 570.06 mi (917.42 km) |
| Opoczno to Correggio | 632.20 mi (1,017.43 km) |
| Opoczno to Corridonia | 644.26 mi (1,036.84 km) |
| Opoczno to Corsico | 655.42 mi (1,054.79 km) |
