| Castelldefels to Mengen | 590.48 mi (950.29 km) |
| Castelldefels to Meppen | 826.88 mi (1,330.73 km) |
| Castelldefels to Merchweiler | 610.12 mi (981.90 km) |
| Castelldefels to Mering | 653.31 mi (1,051.40 km) |
| Castelldefels to Merseburg | 842.70 mi (1,356.19 km) |
| Castelldefels to Merzenich | 694.38 mi (1,117.50 km) |
| Castelldefels to Merzig | 607.47 mi (977.63 km) |
| Castelldefels to Meschede | 757.38 mi (1,218.89 km) |
| Castelldefels to Messkirch | 581.01 mi (935.05 km) |
| Castelldefels to Messstetten | 586.75 mi (944.28 km) |
| Castelldefels to Mettingen | 809.81 mi (1,303.27 km) |
| Castelldefels to Mettlach | 609.77 mi (981.33 km) |
| Castelldefels to Mettmann | 728.50 mi (1,172.40 km) |
| Castelldefels to Metzingen | 615.26 mi (990.17 km) |
| Castelldefels to Meuselwitz | 834.78 mi (1,343.44 km) |
