| Portsmouth to Moston | 192.92 mi (310.47 km) |
| Portsmouth to Motherwell | 364.10 mi (585.96 km) |
| Portsmouth to Mountain Ash | 116.13 mi (186.89 km) |
| Portsmouth to Musselburgh | 363.98 mi (585.77 km) |
| Portsmouth to Nailsea | 84.40 mi (135.83 km) |
| Portsmouth to Nairn | 481.67 mi (775.17 km) |
| Portsmouth to Nantwich | 167.75 mi (269.98 km) |
| Portsmouth to Neath | 131.74 mi (212.02 km) |
| Portsmouth to Nelson | 214.64 mi (345.43 km) |
| Portsmouth to Neston | 191.20 mi (307.71 km) |
| Portsmouth to Netherton | 124.01 mi (199.57 km) |
| Portsmouth to New Brighton | 199.61 mi (321.24 km) |
| Portsmouth to New Mills | 181.22 mi (291.64 km) |
| Portsmouth to New Milton | 24.79 mi (39.89 km) |
| Portsmouth to New Silksworth | 281.17 mi (452.50 km) |
