| Heidelberg to Monchengladbach | 159.15 mi (256.13 km) |
| Heidelberg to Monschau | 134.84 mi (217.01 km) |
| Heidelberg to Montabaur | 80.90 mi (130.19 km) |
| Heidelberg to Moosburg | 160.04 mi (257.56 km) |
| Heidelberg to Morbach | 76.77 mi (123.55 km) |
| Heidelberg to Morfelden-Walldorf | 40.74 mi (65.57 km) |
| Heidelberg to Morlenbach | 12.63 mi (20.32 km) |
| Heidelberg to Morsbach | 109.53 mi (176.28 km) |
| Heidelberg to Mosbach | 19.85 mi (31.94 km) |
| Heidelberg to Mosigkau | 227.19 mi (365.63 km) |
| Heidelberg to Mossingen | 71.50 mi (115.07 km) |
| Heidelberg to Much | 118.90 mi (191.34 km) |
| Heidelberg to Mucheln | 188.13 mi (302.77 km) |
| Heidelberg to Muhlacker | 32.72 mi (52.66 km) |
| Heidelberg to Muhldorf | 191.06 mi (307.48 km) |
