| Harrow to Montigny-les-Metz | 333.87 mi (537.31 km) |
| Harrow to Montivilliers | 142.72 mi (229.68 km) |
| Harrow to Montlouis-sur-Loire | 294.60 mi (474.12 km) |
| Harrow to Montlucon | 386.08 mi (621.34 km) |
| Harrow to Montmagny | 215.95 mi (347.54 km) |
| Harrow to Montmorency | 214.40 mi (345.05 km) |
| Harrow to Montpellier | 584.63 mi (940.88 km) |
| Harrow to Montreuil | 224.90 mi (361.94 km) |
| Harrow to Montrouge | 224.60 mi (361.46 km) |
| Harrow to Morangis | 231.51 mi (372.57 km) |
| Harrow to Morieres-les-Avignon | 581.24 mi (935.41 km) |
| Harrow to Morlaix | 258.71 mi (416.36 km) |
| Harrow to Morsang-sur-Orge | 234.44 mi (377.30 km) |
| Harrow to Mouans-Sartoux | 646.57 mi (1,040.55 km) |
| Harrow to Mougins | 648.33 mi (1,043.39 km) |
