| Mercer Island to Montijo | 5,272.82 mi (8,485.79 km) |
| Mercer Island to Montilla | 5,411.44 mi (8,708.87 km) |
| Mercer Island to Montmelo | 5,406.24 mi (8,700.51 km) |
| Mercer Island to Montornes del Valles | 5,407.33 mi (8,702.25 km) |
| Mercer Island to Montoro | 5,396.04 mi (8,684.09 km) |
| Mercer Island to Monzon | 5,324.97 mi (8,569.72 km) |
| Mercer Island to Mora | 5,324.56 mi (8,569.04 km) |
| Mercer Island to Moralzarzal | 5,264.12 mi (8,471.78 km) |
| Mercer Island to Moron de la Frontera | 5,409.06 mi (8,705.04 km) |
| Mercer Island to Mostoles | 5,286.10 mi (8,507.16 km) |
| Mercer Island to Motril | 5,494.49 mi (8,842.53 km) |
| Mercer Island to Muchamiel | 5,501.55 mi (8,853.90 km) |
| Mercer Island to Mula | 5,489.09 mi (8,833.83 km) |
| Mercer Island to Munguia | 5,152.73 mi (8,292.51 km) |
| Mercer Island to Murcia | 5,503.75 mi (8,857.43 km) |
