| Porto to Lubbeek | 928.98 mi (1,495.05 km) |
| Porto to Lummen | 945.39 mi (1,521.45 km) |
| Porto to Maaseik | 970.15 mi (1,561.30 km) |
| Porto to Machelen | 917.11 mi (1,475.94 km) |
| Porto to Maldegem | 899.64 mi (1,447.82 km) |
| Porto to Malmedy | 948.88 mi (1,527.07 km) |
| Porto to Manage | 891.58 mi (1,434.86 km) |
| Porto to Marche-en-Famenne | 916.51 mi (1,474.98 km) |
| Porto to Mariakerke | 900.81 mi (1,449.72 km) |
| Porto to Mechelen | 923.99 mi (1,487.01 km) |
| Porto to Mechelen-aan-de-Maas | 962.74 mi (1,549.39 km) |
| Porto to Meerhout | 948.34 mi (1,526.20 km) |
| Porto to Meise | 914.85 mi (1,472.31 km) |
| Porto to Melle | 901.14 mi (1,450.24 km) |
| Porto to Melsele | 926.77 mi (1,491.50 km) |
