| Porsgrunn to Magstadt | 717.36 mi (1,154.48 km) |
| Porsgrunn to Mainaschaff | 631.47 mi (1,016.26 km) |
| Porsgrunn to Mainburg | 727.93 mi (1,171.48 km) |
| Porsgrunn to Maintal | 620.44 mi (998.50 km) |
| Porsgrunn to Mainz | 633.59 mi (1,019.66 km) |
| Porsgrunn to Maisach | 755.68 mi (1,216.15 km) |
| Porsgrunn to Maisenhausen | 629.29 mi (1,012.74 km) |
| Porsgrunn to Malente | 343.41 mi (552.67 km) |
| Porsgrunn to Malsch | 709.32 mi (1,141.54 km) |
| Porsgrunn to Manching | 721.97 mi (1,161.90 km) |
| Porsgrunn to Mannheim | 667.07 mi (1,073.55 km) |
| Porsgrunn to Mansfeld | 524.13 mi (843.51 km) |
| Porsgrunn to Marbach am Neckar | 703.77 mi (1,132.61 km) |
| Porsgrunn to Marburg | 575.05 mi (925.46 km) |
| Porsgrunn to Marienberg | 601.61 mi (968.20 km) |
