| Porsgrunn to Leigh-on-Sea | 631.65 mi (1,016.54 km) |
| Porsgrunn to Leighton Buzzard | 640.42 mi (1,030.65 km) |
| Porsgrunn to Leith | 523.27 mi (842.12 km) |
| Porsgrunn to Lemington | 515.31 mi (829.31 km) |
| Porsgrunn to Leominster | 677.48 mi (1,090.31 km) |
| Porsgrunn to Lerwick | 385.41 mi (620.25 km) |
| Porsgrunn to Letchworth | 626.48 mi (1,008.22 km) |
| Porsgrunn to Leven | 510.11 mi (820.95 km) |
| Porsgrunn to Lewes | 685.50 mi (1,103.21 km) |
| Porsgrunn to Leyland | 602.92 mi (970.30 km) |
| Porsgrunn to Leyton | 645.01 mi (1,038.04 km) |
| Porsgrunn to Lichfield | 628.77 mi (1,011.91 km) |
| Porsgrunn to Lincoln | 565.28 mi (909.72 km) |
| Porsgrunn to Linlithgow | 538.12 mi (866.02 km) |
| Porsgrunn to Linslade | 640.36 mi (1,030.56 km) |
