| Porsgrunn to Lizzano | 1,336.89 mi (2,151.52 km) |
| Porsgrunn to Locate di Triulzi | 951.33 mi (1,531.02 km) |
| Porsgrunn to Locorotondo | 1,310.97 mi (2,109.80 km) |
| Porsgrunn to Locri | 1,472.69 mi (2,370.06 km) |
| Porsgrunn to Lodi | 953.45 mi (1,534.43 km) |
| Porsgrunn to Lomazzo | 927.35 mi (1,492.43 km) |
| Porsgrunn to Lonate Pozzolo | 934.69 mi (1,504.24 km) |
| Porsgrunn to Lonigo | 951.37 mi (1,531.08 km) |
| Porsgrunn to Loreto | 1,095.72 mi (1,763.39 km) |
| Porsgrunn to Loria | 928.96 mi (1,495.01 km) |
| Porsgrunn to Lucca | 1,055.86 mi (1,699.24 km) |
| Porsgrunn to Lucera | 1,241.09 mi (1,997.35 km) |
| Porsgrunn to Lugo | 1,019.83 mi (1,641.26 km) |
| Porsgrunn to Luino | 907.07 mi (1,459.79 km) |
| Porsgrunn to Lurate Caccivio | 922.79 mi (1,485.09 km) |
