| Porsgrunn to Berga | 1,223.19 mi (1,968.54 km) |
| Porsgrunn to Berja | 1,639.86 mi (2,639.10 km) |
| Porsgrunn to Bermeo | 1,205.87 mi (1,940.67 km) |
| Porsgrunn to Berriozar | 1,225.00 mi (1,971.45 km) |
| Porsgrunn to Betanzos | 1,332.14 mi (2,143.87 km) |
| Porsgrunn to Betera | 1,420.76 mi (2,286.49 km) |
| Porsgrunn to Bilbao | 1,220.01 mi (1,963.41 km) |
| Porsgrunn to Binefar | 1,259.75 mi (2,027.38 km) |
| Porsgrunn to Binisalem | 1,376.07 mi (2,214.57 km) |
| Porsgrunn to Blanes | 1,241.43 mi (1,997.89 km) |
| Porsgrunn to Boadilla del Monte | 1,421.45 mi (2,287.60 km) |
| Porsgrunn to Boiro | 1,386.99 mi (2,232.14 km) |
| Porsgrunn to Bolanos de Calatrava | 1,518.02 mi (2,443.02 km) |
| Porsgrunn to Bollullos de la Mitacion | 1,662.61 mi (2,675.71 km) |
| Porsgrunn to Bollullos par del Condado | 1,670.14 mi (2,687.82 km) |
