| Opoczno to Marsala | 1,013.27 mi (1,630.70 km) |
| Opoczno to Marsciano | 692.93 mi (1,115.16 km) |
| Opoczno to Martano | 778.10 mi (1,252.23 km) |
| Opoczno to Martellago | 548.00 mi (881.93 km) |
| Opoczno to Martina Franca | 751.04 mi (1,208.68 km) |
| Opoczno to Martinengo | 625.97 mi (1,007.39 km) |
| Opoczno to Martinsicuro | 658.25 mi (1,059.36 km) |
| Opoczno to Mascali | 973.67 mi (1,566.98 km) |
| Opoczno to Mascalucia | 987.88 mi (1,589.84 km) |
| Opoczno to Masera di Padova | 569.24 mi (916.10 km) |
| Opoczno to Maserada sul Piave | 532.30 mi (856.65 km) |
| Opoczno to Massa | 691.82 mi (1,113.38 km) |
| Opoczno to Massa Lombarda | 617.99 mi (994.56 km) |
| Opoczno to Massafra | 760.97 mi (1,224.66 km) |
| Opoczno to Massalubrense | 795.56 mi (1,280.33 km) |
