| Portsmouth to Lubbeek | 258.64 mi (416.24 km) |
| Portsmouth to Lummen | 274.19 mi (441.27 km) |
| Portsmouth to Maaseik | 299.73 mi (482.37 km) |
| Portsmouth to Machelen | 240.98 mi (387.81 km) |
| Portsmouth to Maldegem | 198.39 mi (319.28 km) |
| Portsmouth to Malmedy | 312.51 mi (502.93 km) |
| Portsmouth to Manage | 233.98 mi (376.55 km) |
| Portsmouth to Marche-en-Famenne | 284.93 mi (458.56 km) |
| Portsmouth to Mariakerke | 208.17 mi (335.02 km) |
| Portsmouth to Mechelen | 242.96 mi (391.00 km) |
| Portsmouth to Mechelen-aan-de-Maas | 296.05 mi (476.44 km) |
| Portsmouth to Meerhout | 269.35 mi (433.48 km) |
| Portsmouth to Meise | 236.47 mi (380.56 km) |
| Portsmouth to Melle | 213.33 mi (343.32 km) |
| Portsmouth to Melsele | 235.08 mi (378.32 km) |
