| Porsgrunn to Borsbeek | 584.10 mi (940.02 km) |
| Porsgrunn to Boussu | 643.93 mi (1,036.31 km) |
| Porsgrunn to Braine-l'Alleud | 619.71 mi (997.33 km) |
| Porsgrunn to Braine-le-Chateau | 620.96 mi (999.33 km) |
| Porsgrunn to Braine-le-Comte | 628.26 mi (1,011.08 km) |
| Porsgrunn to Brasschaat | 577.92 mi (930.08 km) |
| Porsgrunn to Brecht | 572.22 mi (920.90 km) |
| Porsgrunn to Bredene | 605.26 mi (974.06 km) |
| Porsgrunn to Bree | 574.84 mi (925.12 km) |
| Porsgrunn to Bruges | 602.64 mi (969.86 km) |
| Porsgrunn to Brussels | 609.06 mi (980.19 km) |
| Porsgrunn to Buggenhout | 601.14 mi (967.45 km) |
| Porsgrunn to Chapelle-lez-Herlaimont | 634.97 mi (1,021.89 km) |
| Porsgrunn to Charleroi | 637.39 mi (1,025.79 km) |
| Porsgrunn to Chatelet | 636.32 mi (1,024.06 km) |
