| Boulder to Mombris | 5,053.91 mi (8,133.48 km) |
| Boulder to Monchengladbach | 4,912.60 mi (7,906.06 km) |
| Boulder to Monschau | 4,935.96 mi (7,943.66 km) |
| Boulder to Montabaur | 4,993.02 mi (8,035.50 km) |
| Boulder to Moosburg | 5,220.37 mi (8,401.38 km) |
| Boulder to Morbach | 4,998.52 mi (8,044.34 km) |
| Boulder to Morfelden-Walldorf | 5,038.14 mi (8,108.10 km) |
| Boulder to Morlenbach | 5,062.03 mi (8,146.56 km) |
| Boulder to Morsbach | 4,969.56 mi (7,997.73 km) |
| Boulder to Mosbach | 5,087.12 mi (8,186.93 km) |
| Boulder to Mosigkau | 5,065.07 mi (8,151.44 km) |
| Boulder to Mossingen | 5,129.12 mi (8,254.52 km) |
| Boulder to Much | 4,956.99 mi (7,977.51 km) |
| Boulder to Mucheln | 5,077.79 mi (8,171.91 km) |
| Boulder to Muhlacker | 5,096.08 mi (8,201.35 km) |
