| Porsgrunn to Brie-Comte-Robert | 774.94 mi (1,247.15 km) |
| Porsgrunn to Brignais | 951.30 mi (1,530.96 km) |
| Porsgrunn to Brignoles | 1,096.44 mi (1,764.55 km) |
| Porsgrunn to Brive-la-Gaillarde | 1,023.02 mi (1,646.39 km) |
| Porsgrunn to Bron | 945.43 mi (1,521.53 km) |
| Porsgrunn to Bruay-sur-l'Escaut | 649.96 mi (1,046.00 km) |
| Porsgrunn to Bruges | 1,074.09 mi (1,728.58 km) |
| Porsgrunn to Brumath | 721.97 mi (1,161.89 km) |
| Porsgrunn to Brunoy | 776.19 mi (1,249.16 km) |
| Porsgrunn to Bruz | 896.21 mi (1,442.30 km) |
| Porsgrunn to Bry-sur-Marne | 766.59 mi (1,233.70 km) |
| Porsgrunn to Bully-les-Mines | 659.95 mi (1,062.09 km) |
| Porsgrunn to Bures-sur-Yvette | 781.54 mi (1,257.77 km) |
| Porsgrunn to Bussy-Saint-Georges | 763.87 mi (1,229.33 km) |
| Porsgrunn to Buxerolles | 946.88 mi (1,523.86 km) |
