| Opoczno to Lubbeek | 669.36 mi (1,077.22 km) |
| Opoczno to Lummen | 652.87 mi (1,050.69 km) |
| Opoczno to Maaseik | 626.55 mi (1,008.33 km) |
| Opoczno to Machelen | 686.47 mi (1,104.77 km) |
| Opoczno to Maldegem | 726.76 mi (1,169.60 km) |
| Opoczno to Malmedy | 624.40 mi (1,004.87 km) |
| Opoczno to Manage | 700.17 mi (1,126.82 km) |
| Opoczno to Marche-en-Famenne | 656.79 mi (1,057.00 km) |
| Opoczno to Mariakerke | 717.53 mi (1,154.75 km) |
| Opoczno to Mechelen | 683.38 mi (1,099.80 km) |
| Opoczno to Mechelen-aan-de-Maas | 631.10 mi (1,015.66 km) |
| Opoczno to Meerhout | 656.47 mi (1,056.49 km) |
| Opoczno to Meise | 690.68 mi (1,111.54 km) |
| Opoczno to Melle | 712.93 mi (1,147.35 km) |
| Opoczno to Melsele | 690.16 mi (1,110.70 km) |
