| Southborough to Mombris | 397.25 mi (639.31 km) |
| Southborough to Monchengladbach | 267.10 mi (429.85 km) |
| Southborough to Monschau | 264.48 mi (425.64 km) |
| Southborough to Montabaur | 333.77 mi (537.15 km) |
| Southborough to Moosburg | 551.77 mi (887.98 km) |
| Southborough to Morbach | 315.02 mi (506.98 km) |
| Southborough to Morfelden-Walldorf | 373.43 mi (600.97 km) |
| Southborough to Morlenbach | 388.28 mi (624.88 km) |
| Southborough to Morsbach | 324.41 mi (522.08 km) |
| Southborough to Mosbach | 411.44 mi (662.15 km) |
| Southborough to Mosigkau | 516.32 mi (830.93 km) |
| Southborough to Mossingen | 435.57 mi (700.98 km) |
| Southborough to Much | 310.31 mi (499.40 km) |
| Southborough to Mucheln | 498.65 mi (802.49 km) |
| Southborough to Muhlacker | 409.56 mi (659.12 km) |
