| Opoczno to Castrovillari | 822.49 mi (1,323.67 km) |
| Opoczno to Catania | 991.86 mi (1,596.24 km) |
| Opoczno to Catanzaro | 880.32 mi (1,416.74 km) |
| Opoczno to Cattolica | 620.30 mi (998.28 km) |
| Opoczno to Cava de' Tirreni | 784.30 mi (1,262.21 km) |
| Opoczno to Cavallino | 770.69 mi (1,240.31 km) |
| Opoczno to Cavarzere | 572.33 mi (921.07 km) |
| Opoczno to Cave | 746.26 mi (1,201.00 km) |
| Opoczno to Cavriago | 643.84 mi (1,036.15 km) |
| Opoczno to Cavriglia | 680.29 mi (1,094.81 km) |
| Opoczno to Cazzago San Martino | 616.42 mi (992.04 km) |
| Opoczno to Ceccano | 753.47 mi (1,212.60 km) |
| Opoczno to Cecina | 719.40 mi (1,157.76 km) |
| Opoczno to Cefalu | 971.14 mi (1,562.89 km) |
| Opoczno to Ceglie Messapico | 753.00 mi (1,211.83 km) |
