| Boston to Masanasa | 937.47 mi (1,508.71 km) |
| Boston to Masquefa | 797.12 mi (1,282.84 km) |
| Boston to Matadepera | 791.36 mi (1,273.57 km) |
| Boston to Mazarron | 1,064.17 mi (1,712.61 km) |
| Boston to Meco | 872.04 mi (1,403.41 km) |
| Boston to Medina del Campo | 838.27 mi (1,349.06 km) |
| Boston to Medina Sidonia | 1,175.70 mi (1,892.11 km) |
| Boston to Mejorada del Campo | 883.26 mi (1,421.47 km) |
| Boston to Meliana | 929.21 mi (1,495.42 km) |
| Boston to Mengibar | 1,052.53 mi (1,693.88 km) |
| Boston to Merida | 1,017.64 mi (1,637.73 km) |
| Boston to Miajadas | 997.26 mi (1,604.94 km) |
| Boston to Mieres | 721.79 mi (1,161.61 km) |
| Boston to Miguelturra | 985.64 mi (1,586.24 km) |
| Boston to Mijas | 1,153.11 mi (1,855.75 km) |
