| Grefrath to Mendicino | 959.94 mi (1,544.87 km) |
| Grefrath to Menfi | 1,002.23 mi (1,612.94 km) |
| Grefrath to Mentana | 709.35 mi (1,141.59 km) |
| Grefrath to Merano | 389.26 mi (626.45 km) |
| Grefrath to Merate | 414.25 mi (666.68 km) |
| Grefrath to Mercato San Severino | 832.31 mi (1,339.47 km) |
| Grefrath to Mercogliano | 823.08 mi (1,324.63 km) |
| Grefrath to Mesagne | 923.28 mi (1,485.87 km) |
| Grefrath to Messina | 1,012.48 mi (1,629.42 km) |
| Grefrath to Mestre | 485.73 mi (781.71 km) |
| Grefrath to Mestrino | 476.54 mi (766.91 km) |
| Grefrath to Milan | 425.99 mi (685.56 km) |
| Grefrath to Milazzo | 1,004.27 mi (1,616.21 km) |
| Grefrath to Minerbio | 521.06 mi (838.56 km) |
| Grefrath to Minervino Murge | 845.23 mi (1,360.26 km) |
