| Opmeer to Masquefa | 787.34 mi (1,267.09 km) |
| Opmeer to Matadepera | 778.74 mi (1,253.26 km) |
| Opmeer to Mazarron | 1,086.13 mi (1,747.95 km) |
| Opmeer to Meco | 925.11 mi (1,488.82 km) |
| Opmeer to Medina del Campo | 912.75 mi (1,468.93 km) |
| Opmeer to Medina Sidonia | 1,239.37 mi (1,994.57 km) |
| Opmeer to Mejorada del Campo | 936.35 mi (1,506.91 km) |
| Opmeer to Meliana | 944.23 mi (1,519.59 km) |
| Opmeer to Mengibar | 1,101.26 mi (1,772.31 km) |
| Opmeer to Merida | 1,094.56 mi (1,761.53 km) |
| Opmeer to Miajadas | 1,072.80 mi (1,726.50 km) |
| Opmeer to Mieres | 818.17 mi (1,316.72 km) |
| Opmeer to Miguelturra | 1,039.26 mi (1,672.53 km) |
| Opmeer to Mijas | 1,205.53 mi (1,940.12 km) |
| Opmeer to Miranda de Ebro | 782.12 mi (1,258.69 km) |
