| Opava to Masquefa | 967.22 mi (1,556.60 km) |
| Opava to Matadepera | 954.52 mi (1,536.15 km) |
| Opava to Mazarron | 1,276.29 mi (2,053.98 km) |
| Opava to Meco | 1,212.93 mi (1,952.02 km) |
| Opava to Medina del Campo | 1,246.88 mi (2,006.65 km) |
| Opava to Medina Sidonia | 1,507.23 mi (2,425.65 km) |
| Opava to Mejorada del Campo | 1,222.26 mi (1,967.04 km) |
| Opava to Meliana | 1,143.71 mi (1,840.62 km) |
| Opava to Mengibar | 1,351.89 mi (2,175.65 km) |
| Opava to Merida | 1,408.77 mi (2,267.19 km) |
| Opava to Miajadas | 1,386.67 mi (2,231.62 km) |
| Opava to Mieres | 1,209.06 mi (1,945.79 km) |
| Opava to Miguelturra | 1,309.85 mi (2,108.00 km) |
| Opava to Mijas | 1,451.14 mi (2,335.39 km) |
| Opava to Miranda de Ebro | 1,108.56 mi (1,784.05 km) |
