| Portsmouth to Mansfield | 161.65 mi (260.15 km) |
| Portsmouth to March | 130.67 mi (210.29 km) |
| Portsmouth to Margate | 114.44 mi (184.17 km) |
| Portsmouth to Market Drayton | 156.78 mi (252.31 km) |
| Portsmouth to Market Harborough | 115.72 mi (186.24 km) |
| Portsmouth to Marlow | 54.45 mi (87.63 km) |
| Portsmouth to Marple | 183.74 mi (295.70 km) |
| Portsmouth to Marton | 257.86 mi (414.99 km) |
| Portsmouth to Maryport | 288.03 mi (463.54 km) |
| Portsmouth to Matlock | 162.48 mi (261.48 km) |
| Portsmouth to Melksham | 60.04 mi (96.62 km) |
| Portsmouth to Meltham | 195.20 mi (314.14 km) |
| Portsmouth to Melton Mowbray | 135.72 mi (218.41 km) |
| Portsmouth to Merthyr Tudful | 118.30 mi (190.39 km) |
| Portsmouth to Methil | 380.00 mi (611.55 km) |
