| Harrow to Lubbeek | 229.57 mi (369.45 km) |
| Harrow to Lummen | 243.19 mi (391.38 km) |
| Harrow to Maaseik | 266.66 mi (429.15 km) |
| Harrow to Machelen | 211.99 mi (341.17 km) |
| Harrow to Maldegem | 165.08 mi (265.67 km) |
| Harrow to Malmedy | 288.08 mi (463.62 km) |
| Harrow to Manage | 212.53 mi (342.03 km) |
| Harrow to Marche-en-Famenne | 264.81 mi (426.18 km) |
| Harrow to Mariakerke | 177.19 mi (285.16 km) |
| Harrow to Mechelen | 211.97 mi (341.13 km) |
| Harrow to Mechelen-aan-de-Maas | 264.42 mi (425.54 km) |
| Harrow to Meerhout | 236.27 mi (380.23 km) |
| Harrow to Meise | 207.24 mi (333.51 km) |
| Harrow to Melle | 183.61 mi (295.49 km) |
| Harrow to Melsele | 201.01 mi (323.50 km) |
