| Opoczno to Mombris | 494.27 mi (795.45 km) |
| Opoczno to Monchengladbach | 597.86 mi (962.16 km) |
| Opoczno to Monschau | 612.14 mi (985.15 km) |
| Opoczno to Montabaur | 546.11 mi (878.87 km) |
| Opoczno to Moosburg | 422.17 mi (679.42 km) |
| Opoczno to Morbach | 586.76 mi (944.30 km) |
| Opoczno to Morfelden-Walldorf | 520.47 mi (837.62 km) |
| Opoczno to Morlenbach | 521.78 mi (839.73 km) |
| Opoczno to Morsbach | 545.60 mi (878.07 km) |
| Opoczno to Mosbach | 509.97 mi (820.72 km) |
| Opoczno to Mosigkau | 346.85 mi (558.20 km) |
| Opoczno to Mossingen | 539.65 mi (868.48 km) |
| Opoczno to Much | 558.75 mi (899.23 km) |
| Opoczno to Mucheln | 366.16 mi (589.28 km) |
| Opoczno to Muhlacker | 533.05 mi (857.86 km) |
