| Porsgrunn to Leinfelden-Echterdingen | 720.51 mi (1,159.55 km) |
| Porsgrunn to Leingarten | 688.97 mi (1,108.79 km) |
| Porsgrunn to Leipzig | 547.30 mi (880.79 km) |
| Porsgrunn to Lemgo | 490.74 mi (789.78 km) |
| Porsgrunn to Lengede | 478.05 mi (769.34 km) |
| Porsgrunn to Lengerich | 484.86 mi (780.30 km) |
| Porsgrunn to Lenggries | 793.75 mi (1,277.41 km) |
| Porsgrunn to Lennestadt | 555.95 mi (894.71 km) |
| Porsgrunn to Leonberg | 713.19 mi (1,147.78 km) |
| Porsgrunn to Leopoldshohe | 492.06 mi (791.89 km) |
| Porsgrunn to Leuna | 546.38 mi (879.32 km) |
| Porsgrunn to Leutenbach | 706.75 mi (1,137.41 km) |
| Porsgrunn to Leutkirch im Allgau | 780.17 mi (1,255.56 km) |
| Porsgrunn to Leverkusen | 568.63 mi (915.12 km) |
| Porsgrunn to Lich | 594.82 mi (957.27 km) |
