| Portsmouth to Mo i Rana | 1,196.37 mi (1,925.38 km) |
| Portsmouth to Molde | 879.87 mi (1,416.02 km) |
| Portsmouth to Mosjoen | 1,154.25 mi (1,857.59 km) |
| Portsmouth to Moss | 755.51 mi (1,215.88 km) |
| Portsmouth to Namsos | 1,047.89 mi (1,686.42 km) |
| Portsmouth to Nannestad | 801.79 mi (1,290.36 km) |
| Portsmouth to Narvik | 1,366.12 mi (2,198.56 km) |
| Portsmouth to Nedre Eiker | 755.90 mi (1,216.51 km) |
| Portsmouth to Nesoddtangen | 772.33 mi (1,242.94 km) |
| Portsmouth to Nittedal | 790.99 mi (1,272.98 km) |
| Portsmouth to Nordre Fale | 774.23 mi (1,246.00 km) |
| Portsmouth to Notodden | 730.18 mi (1,175.12 km) |
| Portsmouth to Notteroy | 735.42 mi (1,183.55 km) |
| Portsmouth to Oppegard | 774.62 mi (1,246.63 km) |
| Portsmouth to Orsta | 832.81 mi (1,340.27 km) |
