| Siena to Lubbeek | 604.65 mi (973.10 km) |
| Siena to Lummen | 602.40 mi (969.46 km) |
| Siena to Maaseik | 597.06 mi (960.87 km) |
| Siena to Machelen | 616.04 mi (991.42 km) |
| Siena to Maldegem | 657.75 mi (1,058.54 km) |
| Siena to Malmedy | 550.63 mi (886.15 km) |
| Siena to Manage | 598.12 mi (962.58 km) |
| Siena to Marche-en-Famenne | 554.34 mi (892.12 km) |
| Siena to Mariakerke | 644.40 mi (1,037.06 km) |
| Siena to Mechelen | 621.70 mi (1,000.53 km) |
| Siena to Mechelen-aan-de-Maas | 592.36 mi (953.32 km) |
| Siena to Meerhout | 613.89 mi (987.97 km) |
| Siena to Meise | 619.90 mi (997.63 km) |
| Siena to Melle | 637.15 mi (1,025.39 km) |
| Siena to Melsele | 637.59 mi (1,026.10 km) |
