| Portsmouth to Lastra a Signa | 748.52 mi (1,204.63 km) |
| Portsmouth to Laterza | 1,107.83 mi (1,782.88 km) |
| Portsmouth to Latiano | 1,146.77 mi (1,845.54 km) |
| Portsmouth to Latina | 927.17 mi (1,492.13 km) |
| Portsmouth to Latisana | 737.71 mi (1,187.22 km) |
| Portsmouth to Lauria Inferiore | 1,102.21 mi (1,773.84 km) |
| Portsmouth to Lavagna | 659.97 mi (1,062.11 km) |
| Portsmouth to Lavello | 1,050.65 mi (1,690.85 km) |
| Portsmouth to Laveno-Mombello | 558.81 mi (899.32 km) |
| Portsmouth to Lavis | 644.42 mi (1,037.09 km) |
| Portsmouth to Lecce | 1,172.52 mi (1,886.99 km) |
| Portsmouth to Lecco | 590.16 mi (949.76 km) |
| Portsmouth to Legnago | 690.69 mi (1,111.55 km) |
| Portsmouth to Legnano | 584.68 mi (940.95 km) |
| Portsmouth to Legnaro | 709.27 mi (1,141.46 km) |
