| Portsmouth to Lizzano | 1,143.65 mi (1,840.52 km) |
| Portsmouth to Locate di Triulzi | 605.97 mi (975.22 km) |
| Portsmouth to Locorotondo | 1,121.39 mi (1,804.71 km) |
| Portsmouth to Locri | 1,212.61 mi (1,951.51 km) |
| Portsmouth to Lodi | 617.75 mi (994.17 km) |
| Portsmouth to Lomazzo | 583.30 mi (938.72 km) |
| Portsmouth to Lonate Pozzolo | 577.61 mi (929.58 km) |
| Portsmouth to Lonigo | 685.32 mi (1,102.91 km) |
| Portsmouth to Loreto | 855.61 mi (1,376.98 km) |
| Portsmouth to Loria | 689.79 mi (1,110.11 km) |
| Portsmouth to Lucca | 723.87 mi (1,164.96 km) |
| Portsmouth to Lucera | 1,011.50 mi (1,627.85 km) |
| Portsmouth to Lugo | 747.77 mi (1,203.42 km) |
| Portsmouth to Luino | 559.48 mi (900.39 km) |
| Portsmouth to Lurate Caccivio | 579.07 mi (931.93 km) |
