| Opoczno to Castelletto sopra Ticino | 659.86 mi (1,061.95 km) |
| Opoczno to Castelli Calepio | 618.33 mi (995.10 km) |
| Opoczno to Castelnovo ne' Monti | 662.12 mi (1,065.58 km) |
| Opoczno to Castelnuovo Berardenga | 689.43 mi (1,109.54 km) |
| Opoczno to Castelnuovo di Porto | 736.47 mi (1,185.24 km) |
| Opoczno to Castelnuovo di Verona | 598.56 mi (963.29 km) |
| Opoczno to Castelnuovo Rangone | 639.15 mi (1,028.61 km) |
| Opoczno to Castelvetrano | 1,014.31 mi (1,632.37 km) |
| Opoczno to Castelvetro di Modena | 641.32 mi (1,032.10 km) |
| Opoczno to Castenaso | 624.93 mi (1,005.72 km) |
| Opoczno to Castenedolo | 612.53 mi (985.77 km) |
| Opoczno to Castiglion Fiorentino | 678.36 mi (1,091.72 km) |
| Opoczno to Castiglione del Lago | 687.02 mi (1,105.65 km) |
| Opoczno to Castiglione delle Stiviere | 609.14 mi (980.32 km) |
| Opoczno to Castrolibero | 856.25 mi (1,378.01 km) |
