| Opoczno to Casamassima | 738.07 mi (1,187.81 km) |
| Opoczno to Casandrino | 776.64 mi (1,249.88 km) |
| Opoczno to Casapulla | 767.38 mi (1,234.98 km) |
| Opoczno to Casarano | 791.48 mi (1,273.77 km) |
| Opoczno to Casatenovo | 636.10 mi (1,023.71 km) |
| Opoczno to Casciana Terme | 704.56 mi (1,133.88 km) |
| Opoczno to Cascina | 698.03 mi (1,123.37 km) |
| Opoczno to Caselle Torinese | 720.42 mi (1,159.41 km) |
| Opoczno to Caserta | 766.50 mi (1,233.56 km) |
| Opoczno to Casier | 538.11 mi (866.01 km) |
| Opoczno to Casorate Primo | 664.46 mi (1,069.34 km) |
| Opoczno to Casoria | 777.93 mi (1,251.96 km) |
| Opoczno to Cassano al Ionio | 823.43 mi (1,325.18 km) |
| Opoczno to Cassano d'Adda | 636.54 mi (1,024.41 km) |
| Opoczno to Cassano delle Murge | 744.16 mi (1,197.61 km) |
