| Porsgrunn to Mickleover | 609.75 mi (981.30 km) |
| Porsgrunn to Middlesbrough | 518.00 mi (833.64 km) |
| Porsgrunn to Middleton | 594.52 mi (956.79 km) |
| Porsgrunn to Middlewich | 619.82 mi (997.50 km) |
| Porsgrunn to Midsomer Norton | 721.61 mi (1,161.32 km) |
| Porsgrunn to Mildenhall | 587.97 mi (946.25 km) |
| Porsgrunn to Milford Haven | 769.18 mi (1,237.87 km) |
| Porsgrunn to Mill Hill | 647.08 mi (1,041.37 km) |
| Porsgrunn to Milngavie | 563.16 mi (906.31 km) |
| Porsgrunn to Milnrow | 589.63 mi (948.92 km) |
| Porsgrunn to Milton | 618.41 mi (995.23 km) |
| Porsgrunn to Milton Keynes | 635.88 mi (1,023.34 km) |
| Porsgrunn to Minehead | 752.16 mi (1,210.48 km) |
| Porsgrunn to Minster | 635.54 mi (1,022.81 km) |
| Porsgrunn to Mirfield | 573.97 mi (923.72 km) |
