| Porsgrunn to Montigny-les-Metz | 706.55 mi (1,137.08 km) |
| Porsgrunn to Montivilliers | 762.74 mi (1,227.52 km) |
| Porsgrunn to Montlouis-sur-Loire | 887.81 mi (1,428.79 km) |
| Porsgrunn to Montlucon | 930.14 mi (1,496.91 km) |
| Porsgrunn to Montmagny | 760.69 mi (1,224.21 km) |
| Porsgrunn to Montmorency | 759.95 mi (1,223.02 km) |
| Porsgrunn to Montpellier | 1,099.34 mi (1,769.21 km) |
| Porsgrunn to Montreuil | 766.48 mi (1,233.54 km) |
| Porsgrunn to Montrouge | 771.22 mi (1,241.15 km) |
| Porsgrunn to Morangis | 778.22 mi (1,252.42 km) |
| Porsgrunn to Morieres-les-Avignon | 1,067.89 mi (1,718.60 km) |
| Porsgrunn to Morlaix | 909.97 mi (1,464.45 km) |
| Porsgrunn to Morsang-sur-Orge | 780.95 mi (1,256.81 km) |
| Porsgrunn to Mouans-Sartoux | 1,076.91 mi (1,733.12 km) |
| Porsgrunn to Mougins | 1,078.18 mi (1,735.17 km) |
