| Porsgrunn to Melun | 784.15 mi (1,261.97 km) |
| Porsgrunn to Mende | 1,041.77 mi (1,676.57 km) |
| Porsgrunn to Mennecy | 785.87 mi (1,264.73 km) |
| Porsgrunn to Menton | 1,064.05 mi (1,712.42 km) |
| Porsgrunn to Mericourt | 660.18 mi (1,062.46 km) |
| Porsgrunn to Merignac | 1,077.48 mi (1,734.03 km) |
| Porsgrunn to Meru | 747.10 mi (1,202.34 km) |
| Porsgrunn to Merville | 648.46 mi (1,043.60 km) |
| Porsgrunn to Mery-sur-Oise | 757.38 mi (1,218.89 km) |
| Porsgrunn to Metz | 705.02 mi (1,134.61 km) |
| Porsgrunn to Meudon | 772.84 mi (1,243.76 km) |
| Porsgrunn to Meylan | 974.79 mi (1,568.78 km) |
| Porsgrunn to Meyzieu | 942.80 mi (1,517.29 km) |
| Porsgrunn to Meze | 1,114.53 mi (1,793.66 km) |
| Porsgrunn to Millau | 1,074.61 mi (1,729.42 km) |
