| Porsgrunn to Zottegem | 615.64 mi (990.77 km) |
| Porsgrunn to Zulte | 618.01 mi (994.60 km) |
| Porsgrunn to Zwevegem | 627.11 mi (1,009.23 km) |
| Porsgrunn to Zwijndrecht | 585.10 mi (941.63 km) |
| Porsgrunn to Asenovgrad | 1,348.61 mi (2,170.38 km) |
| Porsgrunn to Aytos | 1,358.46 mi (2,186.24 km) |
| Porsgrunn to Balchik | 1,336.14 mi (2,150.31 km) |
| Porsgrunn to Bankya | 1,270.62 mi (2,044.87 km) |
| Porsgrunn to Bansko | 1,332.62 mi (2,144.65 km) |
| Porsgrunn to Berkovitsa | 1,236.25 mi (1,989.56 km) |
| Porsgrunn to Blagoevgrad | 1,313.94 mi (2,114.59 km) |
| Porsgrunn to Botevgrad | 1,270.36 mi (2,044.45 km) |
| Porsgrunn to Burgas | 1,375.70 mi (2,213.97 km) |
| Porsgrunn to Byala Slatina | 1,237.82 mi (1,992.09 km) |
| Porsgrunn to Chirpan | 1,346.63 mi (2,167.19 km) |
