| Idar-Oberstein to Marco de Canavezes | 950.28 mi (1,529.33 km) |
| Idar-Oberstein to Marinha Grande | 1,049.39 mi (1,688.82 km) |
| Idar-Oberstein to Massama | 1,112.21 mi (1,789.93 km) |
| Idar-Oberstein to Matosinhos | 971.16 mi (1,562.92 km) |
| Idar-Oberstein to Mealhada | 1,000.19 mi (1,609.65 km) |
| Idar-Oberstein to Melgaco | 911.60 mi (1,467.08 km) |
| Idar-Oberstein to Melres | 965.26 mi (1,553.44 km) |
| Idar-Oberstein to Mira | 1,008.27 mi (1,622.65 km) |
| Idar-Oberstein to Miranda do Corvo | 1,009.94 mi (1,625.34 km) |
| Idar-Oberstein to Mirandela | 899.58 mi (1,447.73 km) |
| Idar-Oberstein to Mogadouro | 889.83 mi (1,432.05 km) |
| Idar-Oberstein to Moimenta da Beira | 940.07 mi (1,512.90 km) |
| Idar-Oberstein to Moita | 1,107.35 mi (1,782.11 km) |
| Idar-Oberstein to Moncao | 921.88 mi (1,483.62 km) |
| Idar-Oberstein to Montalegre | 906.64 mi (1,459.10 km) |
