| Harrow on the Hill to Mombris | 427.08 mi (687.32 km) |
| Harrow on the Hill to Monchengladbach | 292.75 mi (471.13 km) |
| Harrow on the Hill to Monschau | 294.32 mi (473.66 km) |
| Harrow on the Hill to Montabaur | 362.99 mi (584.17 km) |
| Harrow on the Hill to Moosburg | 584.26 mi (940.28 km) |
| Harrow on the Hill to Morbach | 347.54 mi (559.31 km) |
| Harrow on the Hill to Morfelden-Walldorf | 403.94 mi (650.09 km) |
| Harrow on the Hill to Morlenbach | 420.13 mi (676.13 km) |
| Harrow on the Hill to Morsbach | 351.52 mi (565.71 km) |
| Harrow on the Hill to Mosbach | 443.73 mi (714.12 km) |
| Harrow on the Hill to Mosigkau | 537.77 mi (865.45 km) |
| Harrow on the Hill to Mossingen | 470.33 mi (756.92 km) |
| Harrow on the Hill to Much | 337.31 mi (542.85 km) |
| Harrow on the Hill to Mucheln | 522.34 mi (840.62 km) |
| Harrow on the Hill to Muhlacker | 443.24 mi (713.32 km) |
