| Greenbelt to Mombris | 4,068.23 mi (6,547.18 km) |
| Greenbelt to Monchengladbach | 3,926.99 mi (6,319.87 km) |
| Greenbelt to Monschau | 3,937.09 mi (6,336.13 km) |
| Greenbelt to Montabaur | 4,003.70 mi (6,443.33 km) |
| Greenbelt to Moosburg | 4,229.03 mi (6,805.96 km) |
| Greenbelt to Morbach | 3,992.47 mi (6,425.27 km) |
| Greenbelt to Morfelden-Walldorf | 4,046.69 mi (6,512.51 km) |
| Greenbelt to Morlenbach | 4,064.58 mi (6,541.30 km) |
| Greenbelt to Morsbach | 3,987.31 mi (6,416.96 km) |
| Greenbelt to Mosbach | 4,088.49 mi (6,579.79 km) |
| Greenbelt to Mosigkau | 4,136.02 mi (6,656.29 km) |
| Greenbelt to Mossingen | 4,113.16 mi (6,619.50 km) |
| Greenbelt to Much | 3,973.28 mi (6,394.38 km) |
| Greenbelt to Mucheln | 4,135.47 mi (6,655.40 km) |
| Greenbelt to Muhlacker | 4,087.91 mi (6,578.85 km) |
