| South Portland to Marasesti | 4,461.36 mi (7,179.86 km) |
| South Portland to Marghita | 4,213.53 mi (6,781.01 km) |
| South Portland to Marginea | 4,328.55 mi (6,966.12 km) |
| South Portland to Matca | 4,474.20 mi (7,200.53 km) |
| South Portland to Medgidia | 4,570.29 mi (7,355.17 km) |
| South Portland to Media | 4,339.29 mi (6,983.40 km) |
| South Portland to Miercurea-Ciuc | 4,386.77 mi (7,059.83 km) |
| South Portland to Mioveni | 4,411.02 mi (7,098.85 km) |
| South Portland to Mizil | 4,467.82 mi (7,190.26 km) |
| South Portland to Moinesti | 4,409.79 mi (7,096.88 km) |
| South Portland to Moisei | 4,286.04 mi (6,897.72 km) |
| South Portland to Moldova Noua | 4,290.51 mi (6,904.91 km) |
| South Portland to Moreni | 4,437.62 mi (7,141.66 km) |
| South Portland to Motru | 4,339.36 mi (6,983.53 km) |
| South Portland to Murfatlar | 4,579.28 mi (7,369.64 km) |
