| Portsmouth to Ittiri | 843.56 mi (1,357.58 km) |
| Portsmouth to Ivrea | 553.20 mi (890.30 km) |
| Portsmouth to L'Aquila | 899.81 mi (1,448.10 km) |
| Portsmouth to La Loggia | 571.83 mi (920.27 km) |
| Portsmouth to La Maddalena | 830.27 mi (1,336.19 km) |
| Portsmouth to La Spezia | 687.33 mi (1,106.15 km) |
| Portsmouth to Lacchiarella | 604.38 mi (972.65 km) |
| Portsmouth to Ladispoli | 873.67 mi (1,406.04 km) |
| Portsmouth to Lainate | 589.36 mi (948.49 km) |
| Portsmouth to Laives | 642.04 mi (1,033.26 km) |
| Portsmouth to Lana | 627.27 mi (1,009.49 km) |
| Portsmouth to Lanciano | 941.12 mi (1,514.58 km) |
| Portsmouth to Langhirano | 678.04 mi (1,091.20 km) |
| Portsmouth to Lanuvio | 909.00 mi (1,462.90 km) |
| Portsmouth to Lariano | 910.99 mi (1,466.09 km) |
