| Portsmouth to Minervino Murge | 1,058.56 mi (1,703.59 km) |
| Portsmouth to Minturno | 966.67 mi (1,555.70 km) |
| Portsmouth to Mira | 712.16 mi (1,146.11 km) |
| Portsmouth to Mirandola | 694.86 mi (1,118.27 km) |
| Portsmouth to Mirano | 708.33 mi (1,139.95 km) |
| Portsmouth to Misano Adriatico | 797.45 mi (1,283.38 km) |
| Portsmouth to Misilmeri | 1,133.05 mi (1,823.47 km) |
| Portsmouth to Missaglia | 594.30 mi (956.44 km) |
| Portsmouth to Misterbianco | 1,210.88 mi (1,948.72 km) |
| Portsmouth to Modena | 700.62 mi (1,127.54 km) |
| Portsmouth to Modica | 1,240.10 mi (1,995.74 km) |
| Portsmouth to Modugno | 1,085.30 mi (1,746.62 km) |
| Portsmouth to Mogliano Veneto | 711.21 mi (1,144.57 km) |
| Portsmouth to Molfetta | 1,072.84 mi (1,726.57 km) |
| Portsmouth to Molinella | 729.42 mi (1,173.90 km) |
