| Keystone to Mombris | 4,827.83 mi (7,769.63 km) |
| Keystone to Monchengladbach | 4,689.08 mi (7,546.34 km) |
| Keystone to Monschau | 4,695.34 mi (7,556.41 km) |
| Keystone to Montabaur | 4,763.42 mi (7,665.99 km) |
| Keystone to Moosburg | 4,984.23 mi (8,021.35 km) |
| Keystone to Morbach | 4,747.66 mi (7,640.62 km) |
| Keystone to Morfelden-Walldorf | 4,805.06 mi (7,733.00 km) |
| Keystone to Morlenbach | 4,820.93 mi (7,758.54 km) |
| Keystone to Morsbach | 4,749.26 mi (7,643.19 km) |
| Keystone to Mosbach | 4,844.09 mi (7,795.81 km) |
| Keystone to Mosigkau | 4,908.93 mi (7,900.15 km) |
| Keystone to Mossingen | 4,863.19 mi (7,826.55 km) |
| Keystone to Much | 4,735.08 mi (7,620.37 km) |
| Keystone to Mucheln | 4,905.21 mi (7,894.18 km) |
| Keystone to Muhlacker | 4,840.73 mi (7,790.41 km) |
