| River Grove to Mombris | 4,352.44 mi (7,004.57 km) |
| River Grove to Monchengladbach | 4,209.34 mi (6,774.28 km) |
| River Grove to Monschau | 4,226.23 mi (6,801.47 km) |
| River Grove to Montabaur | 4,288.91 mi (6,902.33 km) |
| River Grove to Moosburg | 4,518.05 mi (7,271.10 km) |
| River Grove to Morbach | 4,285.93 mi (6,897.54 km) |
| River Grove to Morfelden-Walldorf | 4,333.51 mi (6,974.10 km) |
| River Grove to Morlenbach | 4,354.62 mi (7,008.09 km) |
| River Grove to Morsbach | 4,268.77 mi (6,869.92 km) |
| River Grove to Mosbach | 4,379.42 mi (7,048.00 km) |
| River Grove to Mosigkau | 4,393.13 mi (7,070.06 km) |
| River Grove to Mossingen | 4,413.07 mi (7,102.15 km) |
| River Grove to Much | 4,255.29 mi (6,848.23 km) |
| River Grove to Mucheln | 4,399.09 mi (7,079.65 km) |
| River Grove to Muhlacker | 4,383.61 mi (7,054.74 km) |
