| Porsgrunn to Miedzyrzec Podlaski | 707.59 mi (1,138.76 km) |
| Porsgrunn to Miedzyrzecz | 513.72 mi (826.75 km) |
| Porsgrunn to Mielec | 766.78 mi (1,234.02 km) |
| Porsgrunn to Mikolow | 717.79 mi (1,155.17 km) |
| Porsgrunn to Milanowek | 643.37 mi (1,035.41 km) |
| Porsgrunn to Milicz | 601.71 mi (968.36 km) |
| Porsgrunn to Minsk Mazowiecki | 663.80 mi (1,068.29 km) |
| Porsgrunn to Mlawa | 582.06 mi (936.74 km) |
| Porsgrunn to Mogilno | 548.27 mi (882.36 km) |
| Porsgrunn to Monki | 637.65 mi (1,026.19 km) |
| Porsgrunn to Morag | 528.96 mi (851.28 km) |
| Porsgrunn to Mosina | 549.30 mi (884.02 km) |
| Porsgrunn to Mragowo | 570.47 mi (918.08 km) |
| Porsgrunn to Murowana Goslina | 533.26 mi (858.19 km) |
| Porsgrunn to Myslenice | 759.61 mi (1,222.47 km) |
