| Opalenica to Masquefa | 1,012.24 mi (1,629.04 km) |
| Opalenica to Matadepera | 1,000.12 mi (1,609.54 km) |
| Opalenica to Mazarron | 1,328.44 mi (2,137.92 km) |
| Opalenica to Meco | 1,234.98 mi (1,987.52 km) |
| Opalenica to Medina del Campo | 1,255.42 mi (2,020.40 km) |
| Opalenica to Medina Sidonia | 1,541.41 mi (2,480.67 km) |
| Opalenica to Mejorada del Campo | 1,245.14 mi (2,003.86 km) |
| Opalenica to Meliana | 1,189.66 mi (1,914.57 km) |
| Opalenica to Mengibar | 1,388.33 mi (2,234.31 km) |
| Opalenica to Merida | 1,426.97 mi (2,296.49 km) |
| Opalenica to Miajadas | 1,404.56 mi (2,260.42 km) |
| Opalenica to Mieres | 1,198.14 mi (1,928.22 km) |
| Opalenica to Miguelturra | 1,339.45 mi (2,155.63 km) |
| Opalenica to Mijas | 1,491.00 mi (2,399.53 km) |
| Opalenica to Miranda de Ebro | 1,115.76 mi (1,795.64 km) |
