| South Portland to Mechernich | 3,484.41 mi (5,607.61 km) |
| South Portland to Meckenbeuren | 3,689.80 mi (5,938.16 km) |
| South Portland to Meckenheim | 3,498.17 mi (5,629.76 km) |
| South Portland to Meerane | 3,706.65 mi (5,965.28 km) |
| South Portland to Meerbusch | 3,466.64 mi (5,579.02 km) |
| South Portland to Meine | 3,585.99 mi (5,771.09 km) |
| South Portland to Meinerzhagen | 3,509.13 mi (5,647.40 km) |
| South Portland to Meiningen | 3,635.75 mi (5,851.18 km) |
| South Portland to Meissen | 3,736.19 mi (6,012.82 km) |
| South Portland to Meitingen | 3,715.21 mi (5,979.05 km) |
| South Portland to Melle | 3,506.47 mi (5,643.11 km) |
| South Portland to Melsungen | 3,584.26 mi (5,768.31 km) |
| South Portland to Memmelsdorf | 3,675.93 mi (5,915.83 km) |
| South Portland to Memmingen | 3,706.05 mi (5,964.32 km) |
| South Portland to Mendig | 3,516.09 mi (5,658.60 km) |
