| Porsgrunn to La Riche | 890.55 mi (1,433.20 km) |
| Porsgrunn to La Roche-sur-Foron | 912.49 mi (1,468.51 km) |
| Porsgrunn to La Roche-sur-Yon | 974.23 mi (1,567.87 km) |
| Porsgrunn to La Rochelle | 1,001.40 mi (1,611.59 km) |
| Porsgrunn to La Seyne-sur-Mer | 1,118.50 mi (1,800.05 km) |
| Porsgrunn to La Teste-de-Buch | 1,100.21 mi (1,770.62 km) |
| Porsgrunn to La Trinite | 1,067.13 mi (1,717.37 km) |
| Porsgrunn to La Valette-du-Var | 1,115.26 mi (1,794.84 km) |
| Porsgrunn to Lamballe | 885.94 mi (1,425.78 km) |
| Porsgrunn to Lambersart | 641.69 mi (1,032.70 km) |
| Porsgrunn to Lambesc | 1,084.79 mi (1,745.80 km) |
| Porsgrunn to Lamorlaye | 747.44 mi (1,202.89 km) |
| Porsgrunn to Lancon-Provence | 1,089.98 mi (1,754.15 km) |
| Porsgrunn to Landerneau | 927.62 mi (1,492.87 km) |
| Porsgrunn to Landivisiau | 919.79 mi (1,480.27 km) |
