| Castelldefels to Mechernich | 681.62 mi (1,096.96 km) |
| Castelldefels to Meckenbeuren | 579.56 mi (932.71 km) |
| Castelldefels to Meckenheim | 689.70 mi (1,109.96 km) |
| Castelldefels to Meerane | 829.02 mi (1,334.18 km) |
| Castelldefels to Meerbusch | 725.07 mi (1,166.89 km) |
| Castelldefels to Meine | 865.86 mi (1,393.46 km) |
| Castelldefels to Meinerzhagen | 730.96 mi (1,176.37 km) |
| Castelldefels to Meiningen | 757.08 mi (1,218.40 km) |
| Castelldefels to Meissen | 874.89 mi (1,408.00 km) |
| Castelldefels to Meitingen | 661.67 mi (1,064.86 km) |
| Castelldefels to Melle | 811.92 mi (1,306.66 km) |
| Castelldefels to Melsungen | 770.16 mi (1,239.45 km) |
| Castelldefels to Memmelsdorf | 737.57 mi (1,187.01 km) |
| Castelldefels to Memmingen | 613.72 mi (987.69 km) |
| Castelldefels to Mendig | 677.83 mi (1,090.87 km) |
