| Porsgrunn to Brownsburg (Indiana) | 4,109.42 mi (6,613.47 km) |
| Porsgrunn to Brownsville (Florida) | 4,700.09 mi (7,564.06 km) |
| Porsgrunn to Brownsville (Texas) | 5,258.95 mi (8,463.47 km) |
| Porsgrunn to Brownwood (Texas) | 4,965.55 mi (7,991.28 km) |
| Porsgrunn to Brunswick (Georgia) | 4,437.75 mi (7,141.87 km) |
| Porsgrunn to Brunswick (Ohio) | 3,886.78 mi (6,255.17 km) |
| Porsgrunn to Brushy Creek (Texas) | 4,999.17 mi (8,045.39 km) |
| Porsgrunn to Bryan (Texas) | 4,948.43 mi (7,963.73 km) |
| Porsgrunn to Bryant (Arkansas) | 4,596.94 mi (7,398.07 km) |
| Porsgrunn to Bryn Mawr-Skyway (Washington) | 4,585.69 mi (7,379.95 km) |
| Porsgrunn to Buckeye (Arizona) | 5,244.33 mi (8,439.94 km) |
| Porsgrunn to Buckhall (Virginia) | 3,881.00 mi (6,245.87 km) |
| Porsgrunn to Bucyrus (Ohio) | 3,947.70 mi (6,353.21 km) |
| Porsgrunn to Buda (Texas) | 5,028.46 mi (8,092.52 km) |
| Porsgrunn to Buena Park (California) | 5,350.96 mi (8,611.54 km) |
