| Porsgrunn to Lormont | 1,072.80 mi (1,726.51 km) |
| Porsgrunn to Loudeac | 908.75 mi (1,462.50 km) |
| Porsgrunn to Lourdes | 1,182.17 mi (1,902.52 km) |
| Porsgrunn to Louviers | 765.00 mi (1,231.14 km) |
| Porsgrunn to Louvres | 753.65 mi (1,212.89 km) |
| Porsgrunn to Luce | 809.49 mi (1,302.75 km) |
| Porsgrunn to Lucon | 982.94 mi (1,581.89 km) |
| Porsgrunn to Lunel | 1,092.52 mi (1,758.24 km) |
| Porsgrunn to Luneville | 738.73 mi (1,188.88 km) |
| Porsgrunn to Lyon | 944.68 mi (1,520.32 km) |
| Porsgrunn to Lys-les-Lannoy | 637.27 mi (1,025.59 km) |
| Porsgrunn to Macon | 907.69 mi (1,460.79 km) |
| Porsgrunn to Magny-le-Hongre | 760.80 mi (1,224.39 km) |
| Porsgrunn to Magny-les-Hameaux | 780.99 mi (1,256.89 km) |
| Porsgrunn to Mainvilliers | 808.59 mi (1,301.30 km) |
