| Idar-Oberstein to Menen | 199.71 mi (321.40 km) |
| Idar-Oberstein to Merchtem | 161.13 mi (259.31 km) |
| Idar-Oberstein to Merelbeke | 180.52 mi (290.52 km) |
| Idar-Oberstein to Merksem | 164.72 mi (265.09 km) |
| Idar-Oberstein to Merksplas | 156.89 mi (252.50 km) |
| Idar-Oberstein to Mettet | 125.18 mi (201.45 km) |
| Idar-Oberstein to Meulebeke | 197.08 mi (317.17 km) |
| Idar-Oberstein to Middelkerke | 222.33 mi (357.81 km) |
| Idar-Oberstein to Mol | 140.28 mi (225.75 km) |
| Idar-Oberstein to Mons | 157.59 mi (253.61 km) |
| Idar-Oberstein to Montignies-le-Tilleul | 138.02 mi (222.12 km) |
| Idar-Oberstein to Moorslede | 204.47 mi (329.07 km) |
| Idar-Oberstein to Moortebeek | 153.24 mi (246.61 km) |
| Idar-Oberstein to Morlanwelz-Mariemont | 145.76 mi (234.58 km) |
| Idar-Oberstein to Mortsel | 160.60 mi (258.47 km) |
