| Portsmouth to Marly-le-Roi | 195.02 mi (313.86 km) |
| Portsmouth to Marmande | 439.55 mi (707.39 km) |
| Portsmouth to Maromme | 131.35 mi (211.38 km) |
| Portsmouth to Marquette-les-Lille | 181.80 mi (292.58 km) |
| Portsmouth to Marseille | 600.80 mi (966.90 km) |
| Portsmouth to Martigues | 586.62 mi (944.08 km) |
| Portsmouth to Massy | 207.36 mi (333.72 km) |
| Portsmouth to Maubeuge | 225.14 mi (362.33 km) |
| Portsmouth to Mauguio | 550.97 mi (886.70 km) |
| Portsmouth to Mauleon | 268.73 mi (432.47 km) |
| Portsmouth to Maurepas | 195.49 mi (314.62 km) |
| Portsmouth to Maxeville | 354.30 mi (570.19 km) |
| Portsmouth to Mayenne | 174.22 mi (280.37 km) |
| Portsmouth to Mazamet | 530.72 mi (854.11 km) |
| Portsmouth to Meaux | 218.09 mi (350.98 km) |
