| Porsgrunn to Marly-le-Roi | 771.58 mi (1,241.73 km) |
| Porsgrunn to Marmande | 1,086.51 mi (1,748.57 km) |
| Porsgrunn to Maromme | 750.39 mi (1,207.64 km) |
| Porsgrunn to Marquette-les-Lille | 639.37 mi (1,028.96 km) |
| Porsgrunn to Marseille | 1,108.45 mi (1,783.88 km) |
| Porsgrunn to Martigues | 1,103.38 mi (1,775.71 km) |
| Porsgrunn to Massy | 777.61 mi (1,251.44 km) |
| Porsgrunn to Maubeuge | 651.62 mi (1,048.68 km) |
| Porsgrunn to Mauguio | 1,097.81 mi (1,766.75 km) |
| Porsgrunn to Mauleon | 945.45 mi (1,521.55 km) |
| Porsgrunn to Maurepas | 780.69 mi (1,256.40 km) |
| Porsgrunn to Maxeville | 732.95 mi (1,179.56 km) |
| Porsgrunn to Mayenne | 855.90 mi (1,377.44 km) |
| Porsgrunn to Mazamet | 1,123.45 mi (1,808.02 km) |
| Porsgrunn to Meaux | 753.35 mi (1,212.40 km) |
