| Clay to Mombris | 4,710.95 mi (7,581.55 km) |
| Clay to Monchengladbach | 4,569.04 mi (7,353.15 km) |
| Clay to Monschau | 4,580.56 mi (7,371.69 km) |
| Clay to Montabaur | 4,646.50 mi (7,477.83 km) |
| Clay to Moosburg | 4,873.03 mi (7,842.38 km) |
| Clay to Morbach | 4,636.89 mi (7,462.35 km) |
| Clay to Morfelden-Walldorf | 4,689.91 mi (7,547.67 km) |
| Clay to Morlenbach | 4,708.47 mi (7,577.55 km) |
| Clay to Morsbach | 4,629.30 mi (7,450.13 km) |
| Clay to Mosbach | 4,732.60 mi (7,616.39 km) |
| Clay to Mosigkau | 4,772.64 mi (7,680.82 km) |
| Clay to Mossingen | 4,758.97 mi (7,658.82 km) |
| Clay to Much | 4,615.36 mi (7,427.70 km) |
| Clay to Mucheln | 4,773.71 mi (7,682.54 km) |
| Clay to Muhlacker | 4,732.92 mi (7,616.89 km) |
