| Humacao to Montijo | 3,796.86 mi (6,110.45 km) |
| Humacao to Montilla | 3,899.03 mi (6,274.88 km) |
| Humacao to Montmelo | 4,271.45 mi (6,874.24 km) |
| Humacao to Montornes del Valles | 4,272.33 mi (6,875.65 km) |
| Humacao to Montoro | 3,913.87 mi (6,298.76 km) |
| Humacao to Monzon | 4,165.65 mi (6,703.97 km) |
| Humacao to Mora | 3,951.90 mi (6,359.96 km) |
| Humacao to Moralzarzal | 3,945.86 mi (6,350.24 km) |
| Humacao to Moron de la Frontera | 3,852.82 mi (6,200.52 km) |
| Humacao to Mostoles | 3,949.73 mi (6,356.48 km) |
| Humacao to Motril | 3,958.87 mi (6,371.18 km) |
| Humacao to Muchamiel | 4,128.16 mi (6,643.63 km) |
| Humacao to Mula | 4,071.29 mi (6,552.11 km) |
| Humacao to Munguia | 4,017.11 mi (6,464.92 km) |
| Humacao to Murcia | 4,090.87 mi (6,583.62 km) |
