| Altena to Monchengladbach | 53.79 mi (86.56 km) |
| Altena to Monschau | 79.91 mi (128.60 km) |
| Altena to Montabaur | 60.00 mi (96.55 km) |
| Altena to Moosburg | 272.68 mi (438.84 km) |
| Altena to Morbach | 105.29 mi (169.45 km) |
| Altena to Morfelden-Walldorf | 98.39 mi (158.34 km) |
| Altena to Morlenbach | 126.60 mi (203.75 km) |
| Altena to Morsbach | 30.02 mi (48.31 km) |
| Altena to Mosbach | 149.57 mi (240.71 km) |
| Altena to Mosigkau | 199.53 mi (321.11 km) |
| Altena to Mossingen | 209.30 mi (336.83 km) |
| Altena to Much | 28.90 mi (46.51 km) |
| Altena to Mucheln | 178.54 mi (287.32 km) |
| Altena to Muhlacker | 170.47 mi (274.35 km) |
| Altena to Muhldorf | 302.35 mi (486.59 km) |
