| Porvoo to Menen | 1,092.79 mi (1,758.67 km) |
| Porvoo to Merchtem | 1,050.74 mi (1,691.00 km) |
| Porvoo to Merelbeke | 1,063.61 mi (1,711.71 km) |
| Porvoo to Merksem | 1,030.71 mi (1,658.77 km) |
| Porvoo to Merksplas | 1,011.80 mi (1,628.33 km) |
| Porvoo to Mettet | 1,071.19 mi (1,723.92 km) |
| Porvoo to Meulebeke | 1,080.13 mi (1,738.30 km) |
| Porvoo to Middelkerke | 1,082.89 mi (1,742.75 km) |
| Porvoo to Mol | 1,013.53 mi (1,631.12 km) |
| Porvoo to Mons | 1,085.31 mi (1,746.63 km) |
| Porvoo to Montignies-le-Tilleul | 1,075.91 mi (1,731.51 km) |
| Porvoo to Moorslede | 1,089.87 mi (1,753.97 km) |
| Porvoo to Moortebeek | 1,053.22 mi (1,695.00 km) |
| Porvoo to Morlanwelz-Mariemont | 1,076.91 mi (1,733.12 km) |
| Porvoo to Mortsel | 1,033.74 mi (1,663.65 km) |
