| Idar-Oberstein to Monticello Conte Otto | 346.56 mi (557.73 km) |
| Idar-Oberstein to Montichiari | 329.59 mi (530.43 km) |
| Idar-Oberstein to Montignoso | 415.84 mi (669.22 km) |
| Idar-Oberstein to Montopoli in Val d'Arno | 448.17 mi (721.25 km) |
| Idar-Oberstein to Monza | 299.42 mi (481.87 km) |
| Idar-Oberstein to Morbegno | 268.31 mi (431.80 km) |
| Idar-Oberstein to Mori | 316.48 mi (509.33 km) |
| Idar-Oberstein to Morlupo | 579.02 mi (931.84 km) |
| Idar-Oberstein to Morrovalle | 532.59 mi (857.12 km) |
| Idar-Oberstein to Mortara | 315.45 mi (507.67 km) |
| Idar-Oberstein to Mosciano Sant'Angelo | 573.92 mi (923.64 km) |
| Idar-Oberstein to Motta di Livenza | 366.32 mi (589.54 km) |
| Idar-Oberstein to Motta Sant'Anastasia | 925.38 mi (1,489.25 km) |
| Idar-Oberstein to Mottola | 784.49 mi (1,262.52 km) |
| Idar-Oberstein to Mozzate | 288.52 mi (464.32 km) |
