| South Portland to Mancha Real | 3,421.13 mi (5,505.78 km) |
| South Portland to Manilva | 3,390.07 mi (5,455.78 km) |
| South Portland to Manises | 3,513.77 mi (5,654.86 km) |
| South Portland to Manlleu | 3,556.87 mi (5,724.22 km) |
| South Portland to Manresa | 3,545.12 mi (5,705.32 km) |
| South Portland to Manzanares | 3,392.40 mi (5,459.54 km) |
| South Portland to Manzanares el Real | 3,314.24 mi (5,333.75 km) |
| South Portland to Maracena | 3,439.97 mi (5,536.09 km) |
| South Portland to Marbella | 3,403.20 mi (5,476.92 km) |
| South Portland to Marchena | 3,349.89 mi (5,391.12 km) |
| South Portland to Marin | 3,038.92 mi (4,890.67 km) |
| South Portland to Marratxi | 3,657.14 mi (5,885.60 km) |
| South Portland to Martorell | 3,557.95 mi (5,725.97 km) |
| South Portland to Martos | 3,406.56 mi (5,482.32 km) |
| South Portland to Masamagrell | 3,516.47 mi (5,659.21 km) |
