| Heidelberg to Mainaschaff | 42.44 mi (68.30 km) |
| Heidelberg to Mainburg | 148.66 mi (239.24 km) |
| Heidelberg to Maintal | 50.93 mi (81.97 km) |
| Heidelberg to Mainz | 44.01 mi (70.83 km) |
| Heidelberg to Maisach | 142.58 mi (229.47 km) |
| Heidelberg to Maisenhausen | 43.27 mi (69.63 km) |
| Heidelberg to Malente | 337.38 mi (542.97 km) |
| Heidelberg to Malsch | 40.86 mi (65.76 km) |
| Heidelberg to Manching | 134.78 mi (216.91 km) |
| Heidelberg to Mannheim | 12.28 mi (19.76 km) |
| Heidelberg to Mansfeld | 192.62 mi (309.98 km) |
| Heidelberg to Marbach am Neckar | 41.18 mi (66.27 km) |
| Heidelberg to Marburg | 96.30 mi (154.98 km) |
| Heidelberg to Marienberg | 213.95 mi (344.32 km) |
| Heidelberg to Marienheide | 126.46 mi (203.52 km) |
