| Harrow to Maisons-Alfort | 228.00 mi (366.93 km) |
| Harrow to Maisons-Laffitte | 212.82 mi (342.49 km) |
| Harrow to Maizieres-les-Metz | 329.97 mi (531.03 km) |
| Harrow to Malakoff | 223.98 mi (360.46 km) |
| Harrow to Mandelieu-la-Napoule | 650.20 mi (1,046.39 km) |
| Harrow to Manosque | 606.06 mi (975.35 km) |
| Harrow to Mantes-la-Jolie | 200.96 mi (323.41 km) |
| Harrow to Mantes-la-Ville | 201.83 mi (324.81 km) |
| Harrow to Marck | 108.56 mi (174.71 km) |
| Harrow to Marcq-en-Baroeul | 162.07 mi (260.82 km) |
| Harrow to Margny-les-Compiegne | 203.91 mi (328.15 km) |
| Harrow to Marguerittes | 577.92 mi (930.08 km) |
| Harrow to Marignane | 620.72 mi (998.95 km) |
| Harrow to Marly | 335.22 mi (539.49 km) |
| Harrow to Marly | 189.54 mi (305.03 km) |
