| Idar-Oberstein to Meppen | 206.05 mi (331.61 km) |
| Idar-Oberstein to Merchweiler | 26.78 mi (43.10 km) |
| Idar-Oberstein to Mering | 194.21 mi (312.55 km) |
| Idar-Oberstein to Merseburg | 234.73 mi (377.76 km) |
| Idar-Oberstein to Merzenich | 84.49 mi (135.98 km) |
| Idar-Oberstein to Merzig | 36.05 mi (58.01 km) |
| Idar-Oberstein to Meschede | 120.97 mi (194.68 km) |
| Idar-Oberstein to Messkirch | 144.19 mi (232.05 km) |
| Idar-Oberstein to Messstetten | 129.57 mi (208.51 km) |
| Idar-Oberstein to Mettingen | 181.15 mi (291.53 km) |
| Idar-Oberstein to Mettlach | 35.47 mi (57.08 km) |
| Idar-Oberstein to Mettmann | 107.39 mi (172.83 km) |
| Idar-Oberstein to Metzingen | 120.59 mi (194.07 km) |
| Idar-Oberstein to Meuselwitz | 238.33 mi (383.56 km) |
| Idar-Oberstein to Michelstadt | 75.60 mi (121.67 km) |
