| Castel Gandolfo to Mechernich | 675.20 mi (1,086.62 km) |
| Castel Gandolfo to Meckenbeuren | 438.29 mi (705.36 km) |
| Castel Gandolfo to Meckenheim | 670.06 mi (1,078.36 km) |
| Castel Gandolfo to Meerane | 629.16 mi (1,012.53 km) |
| Castel Gandolfo to Meerbusch | 716.10 mi (1,152.46 km) |
| Castel Gandolfo to Meine | 741.55 mi (1,193.41 km) |
| Castel Gandolfo to Meinerzhagen | 689.68 mi (1,109.93 km) |
| Castel Gandolfo to Meiningen | 617.50 mi (993.76 km) |
| Castel Gandolfo to Meissen | 652.04 mi (1,049.35 km) |
| Castel Gandolfo to Meitingen | 477.16 mi (767.91 km) |
| Castel Gandolfo to Melle | 750.26 mi (1,207.43 km) |
| Castel Gandolfo to Melsungen | 664.98 mi (1,070.18 km) |
| Castel Gandolfo to Memmelsdorf | 571.43 mi (919.62 km) |
| Castel Gandolfo to Memmingen | 447.79 mi (720.65 km) |
| Castel Gandolfo to Mendig | 648.92 mi (1,044.33 km) |
