| Siena to Montigny-les-Metz | 469.74 mi (755.97 km) |
| Siena to Montivilliers | 681.97 mi (1,097.52 km) |
| Siena to Montlouis-sur-Loire | 581.71 mi (936.17 km) |
| Siena to Montlucon | 475.59 mi (765.39 km) |
| Siena to Montmagny | 580.40 mi (934.06 km) |
| Siena to Montmorency | 581.95 mi (936.55 km) |
| Siena to Montpellier | 374.23 mi (602.27 km) |
| Siena to Montreuil | 572.07 mi (920.65 km) |
| Siena to Montrouge | 574.52 mi (924.61 km) |
| Siena to Morangis | 569.38 mi (916.32 km) |
| Siena to Morieres-les-Avignon | 324.19 mi (521.73 km) |
| Siena to Morlaix | 811.94 mi (1,306.70 km) |
| Siena to Morsang-sur-Orge | 567.09 mi (912.65 km) |
| Siena to Mouans-Sartoux | 219.57 mi (353.36 km) |
| Siena to Mougins | 218.34 mi (351.38 km) |
