| Idar-Oberstein to Masquefa | 625.89 mi (1,007.28 km) |
| Idar-Oberstein to Matadepera | 615.28 mi (990.20 km) |
| Idar-Oberstein to Mazarron | 940.05 mi (1,512.86 km) |
| Idar-Oberstein to Meco | 816.44 mi (1,313.93 km) |
| Idar-Oberstein to Medina del Campo | 827.77 mi (1,332.16 km) |
| Idar-Oberstein to Medina Sidonia | 1,129.13 mi (1,817.16 km) |
| Idar-Oberstein to Mejorada del Campo | 827.10 mi (1,331.09 km) |
| Idar-Oberstein to Meliana | 797.22 mi (1,283.01 km) |
| Idar-Oberstein to Mengibar | 980.31 mi (1,577.66 km) |
| Idar-Oberstein to Merida | 1,003.50 mi (1,614.97 km) |
| Idar-Oberstein to Miajadas | 981.08 mi (1,578.90 km) |
| Idar-Oberstein to Mieres | 764.49 mi (1,230.32 km) |
| Idar-Oberstein to Miguelturra | 925.70 mi (1,489.77 km) |
| Idar-Oberstein to Mijas | 1,084.83 mi (1,745.86 km) |
| Idar-Oberstein to Miranda de Ebro | 688.71 mi (1,108.36 km) |
