| Portland to Menen | 5,036.09 mi (8,104.80 km) |
| Portland to Merchtem | 5,055.13 mi (8,135.45 km) |
| Portland to Merelbeke | 5,040.92 mi (8,112.58 km) |
| Portland to Merksem | 5,044.94 mi (8,119.04 km) |
| Portland to Merksplas | 5,048.68 mi (8,125.07 km) |
| Portland to Mettet | 5,102.31 mi (8,211.37 km) |
| Portland to Meulebeke | 5,031.80 mi (8,097.90 km) |
| Portland to Middelkerke | 5,006.66 mi (8,057.44 km) |
| Portland to Mol | 5,065.27 mi (8,151.76 km) |
| Portland to Mons | 5,076.80 mi (8,170.32 km) |
| Portland to Montignies-le-Tilleul | 5,091.69 mi (8,194.28 km) |
| Portland to Moorslede | 5,029.28 mi (8,093.85 km) |
| Portland to Moortebeek | 5,064.09 mi (8,149.87 km) |
| Portland to Morlanwelz-Mariemont | 5,084.10 mi (8,182.06 km) |
| Portland to Mortsel | 5,049.85 mi (8,126.94 km) |
