| Cities | Distance |
|---|---|
| Porsgrunn to Lapua | 517.04 mi (832.10 km) |
| Porsgrunn to Laukaa | 591.53 mi (951.98 km) |
| Porsgrunn to Lauritsala | 650.79 mi (1,047.34 km) |
| Porsgrunn to Lempaala | 504.14 mi (811.33 km) |
| Porsgrunn to Leppavirta | 649.74 mi (1,045.65 km) |
| Porsgrunn to Lieksa | 731.28 mi (1,176.88 km) |
| Porsgrunn to Lieto | 452.12 mi (727.61 km) |
| Porsgrunn to Liminka | 641.24 mi (1,031.98 km) |
| Porsgrunn to Liperi | 700.13 mi (1,126.76 km) |
| Porsgrunn to Lohja | 505.78 mi (813.97 km) |
| Porsgrunn to Loimaa | 475.76 mi (765.66 km) |
| Porsgrunn to Loviisa | 580.34 mi (933.97 km) |
| Porsgrunn to Mantsala | 549.88 mi (884.95 km) |
| Porsgrunn to Mariehamn | 363.39 mi (584.81 km) |
| Porsgrunn to Masku | 440.94 mi (709.62 km) |