| Porsgrunn to Lowell (Indiana) | 4,060.70 mi (6,535.07 km) |
| Porsgrunn to Lowell (Massachusetts) | 3,468.06 mi (5,581.31 km) |
| Porsgrunn to Lower Burrell (Pennsylvania) | 3,854.81 mi (6,203.71 km) |
| Porsgrunn to Lowes Island (Virginia) | 3,860.28 mi (6,212.53 km) |
| Porsgrunn to Lubbock (Texas) | 4,941.20 mi (7,952.10 km) |
| Porsgrunn to Lufkin (Texas) | 4,858.49 mi (7,818.99 km) |
| Porsgrunn to Luling (Louisiana) | 4,802.57 mi (7,728.99 km) |
| Porsgrunn to Lumberton (North Carolina) | 4,158.92 mi (6,693.14 km) |
| Porsgrunn to Lumberton (Texas) | 4,904.74 mi (7,893.41 km) |
| Porsgrunn to Lutz (Florida) | 4,642.22 mi (7,470.93 km) |
| Porsgrunn to Lynbrook (New York) | 3,651.01 mi (5,875.73 km) |
| Porsgrunn to Lynchburg (Virginia) | 4,011.34 mi (6,455.62 km) |
| Porsgrunn to Lynden (Washington) | 4,498.45 mi (7,239.56 km) |
| Porsgrunn to Lyndhurst (Ohio) | 3,861.58 mi (6,214.61 km) |
| Porsgrunn to Lyndon (Kentucky) | 4,171.80 mi (6,713.86 km) |
