| Boston to Montijo | 1,021.03 mi (1,643.19 km) |
| Boston to Montilla | 1,086.20 mi (1,748.07 km) |
| Boston to Montmelo | 796.05 mi (1,281.11 km) |
| Boston to Montornes del Valles | 796.86 mi (1,282.42 km) |
| Boston to Montoro | 1,054.32 mi (1,696.76 km) |
| Boston to Monzon | 764.51 mi (1,230.36 km) |
| Boston to Mora | 935.23 mi (1,505.11 km) |
| Boston to Moralzarzal | 869.69 mi (1,399.63 km) |
| Boston to Moron de la Frontera | 1,126.06 mi (1,812.22 km) |
| Boston to Mostoles | 891.89 mi (1,435.36 km) |
| Boston to Motril | 1,133.62 mi (1,824.38 km) |
| Boston to Muchamiel | 1,006.23 mi (1,619.37 km) |
| Boston to Mula | 1,034.10 mi (1,664.22 km) |
| Boston to Munguia | 677.13 mi (1,089.73 km) |
| Boston to Murcia | 1,036.92 mi (1,668.77 km) |
