| Porsgrunn to Alexandria | 1,236.58 mi (1,990.09 km) |
| Porsgrunn to Arad | 1,014.55 mi (1,632.76 km) |
| Porsgrunn to Avrig | 1,108.26 mi (1,783.58 km) |
| Porsgrunn to Babadag | 1,263.54 mi (2,033.47 km) |
| Porsgrunn to Bacau | 1,118.03 mi (1,799.29 km) |
| Porsgrunn to Baia Mare | 971.84 mi (1,564.03 km) |
| Porsgrunn to Baia-Sprie | 975.14 mi (1,569.34 km) |
| Porsgrunn to Baicoi | 1,183.08 mi (1,903.98 km) |
| Porsgrunn to Bailesti | 1,190.40 mi (1,915.76 km) |
| Porsgrunn to Bals | 1,185.95 mi (1,908.60 km) |
| Porsgrunn to Baraolt | 1,114.90 mi (1,794.26 km) |
| Porsgrunn to Barlad | 1,158.77 mi (1,864.87 km) |
| Porsgrunn to Beclean | 1,014.97 mi (1,633.44 km) |
| Porsgrunn to Beius | 1,005.98 mi (1,618.97 km) |
| Porsgrunn to Bicaz | 1,077.84 mi (1,734.61 km) |
