| Porsgrunn to Luzzara | 978.44 mi (1,574.65 km) |
| Porsgrunn to Luzzi | 1,389.09 mi (2,235.52 km) |
| Porsgrunn to Macerata | 1,104.25 mi (1,777.12 km) |
| Porsgrunn to Macerata Campania | 1,262.59 mi (2,031.95 km) |
| Porsgrunn to Macomer | 1,302.96 mi (2,096.91 km) |
| Porsgrunn to Maddaloni | 1,265.68 mi (2,036.92 km) |
| Porsgrunn to Magenta | 944.13 mi (1,519.43 km) |
| Porsgrunn to Magione | 1,108.19 mi (1,783.47 km) |
| Porsgrunn to Maglie | 1,363.25 mi (2,193.94 km) |
| Porsgrunn to Magnago | 936.04 mi (1,506.41 km) |
| Porsgrunn to Malalbergo | 997.80 mi (1,605.81 km) |
| Porsgrunn to Malnate | 920.66 mi (1,481.66 km) |
| Porsgrunn to Malo | 932.48 mi (1,500.68 km) |
| Porsgrunn to Mandello del Lario | 912.10 mi (1,467.89 km) |
| Porsgrunn to Manduria | 1,338.40 mi (2,153.95 km) |
