| Harrow on the Hill to Montigny-les-Metz | 332.76 mi (535.53 km) |
| Harrow on the Hill to Montivilliers | 141.39 mi (227.54 km) |
| Harrow on the Hill to Montlouis-sur-Loire | 293.27 mi (471.97 km) |
| Harrow on the Hill to Montlucon | 384.70 mi (619.12 km) |
| Harrow on the Hill to Montmagny | 214.59 mi (345.35 km) |
| Harrow on the Hill to Montmorency | 213.04 mi (342.85 km) |
| Harrow on the Hill to Montpellier | 583.26 mi (938.66 km) |
| Harrow on the Hill to Montreuil | 223.53 mi (359.74 km) |
| Harrow on the Hill to Montrouge | 223.23 mi (359.25 km) |
| Harrow on the Hill to Morangis | 230.13 mi (370.37 km) |
| Harrow on the Hill to Morieres-les-Avignon | 579.86 mi (933.19 km) |
| Harrow on the Hill to Morlaix | 258.09 mi (415.36 km) |
| Harrow on the Hill to Morsang-sur-Orge | 233.07 mi (375.09 km) |
| Harrow on the Hill to Mouans-Sartoux | 645.21 mi (1,038.36 km) |
| Harrow on the Hill to Mougins | 646.97 mi (1,041.19 km) |
