| Opoczno to Butzbach | 510.08 mi (820.89 km) |
| Opoczno to Buxtehude | 468.47 mi (753.93 km) |
| Opoczno to Cadolzburg | 435.25 mi (700.46 km) |
| Opoczno to Calbe | 366.54 mi (589.89 km) |
| Opoczno to Calw | 543.87 mi (875.28 km) |
| Opoczno to Castrop-Rauxel | 557.71 mi (897.55 km) |
| Opoczno to Celle | 442.15 mi (711.57 km) |
| Opoczno to Cham | 368.42 mi (592.91 km) |
| Opoczno to Chemnitz | 321.80 mi (517.89 km) |
| Opoczno to Clausthal-Zellerfeld | 427.85 mi (688.56 km) |
| Opoczno to Cloppenburg | 528.40 mi (850.38 km) |
| Opoczno to Coburg | 413.69 mi (665.76 km) |
| Opoczno to Coesfeld | 562.91 mi (905.92 km) |
| Opoczno to Cologne | 577.83 mi (929.93 km) |
| Opoczno to Coswig | 290.27 mi (467.14 km) |
