| South Portland to Lubbeek | 3,404.06 mi (5,478.31 km) |
| South Portland to Lummen | 3,415.77 mi (5,497.15 km) |
| South Portland to Maaseik | 3,436.03 mi (5,529.76 km) |
| South Portland to Machelen | 3,387.01 mi (5,450.87 km) |
| South Portland to Maldegem | 3,339.11 mi (5,373.78 km) |
| South Portland to Malmedy | 3,464.03 mi (5,574.82 km) |
| South Portland to Manage | 3,389.62 mi (5,455.06 km) |
| South Portland to Marche-en-Famenne | 3,441.90 mi (5,539.20 km) |
| South Portland to Mariakerke | 3,352.14 mi (5,394.75 km) |
| South Portland to Mechelen | 3,385.70 mi (5,448.75 km) |
| South Portland to Mechelen-aan-de-Maas | 3,435.55 mi (5,528.98 km) |
| South Portland to Meerhout | 3,407.10 mi (5,483.20 km) |
| South Portland to Meise | 3,382.24 mi (5,443.19 km) |
| South Portland to Melle | 3,359.01 mi (5,405.80 km) |
| South Portland to Melsele | 3,372.67 mi (5,427.79 km) |
