| Porsgrunn to Bountiful (Utah) | 4,767.53 mi (7,672.59 km) |
| Porsgrunn to Bourbonnais (Illinois) | 4,080.91 mi (6,567.60 km) |
| Porsgrunn to Bowie (Maryland) | 3,844.92 mi (6,187.80 km) |
| Porsgrunn to Bowling Green (Kentucky) | 4,271.44 mi (6,874.22 km) |
| Porsgrunn to Bowling Green (Ohio) | 3,937.95 mi (6,337.51 km) |
| Porsgrunn to Box Elder (South Dakota) | 4,350.19 mi (7,000.95 km) |
| Porsgrunn to Boynton Beach (Florida) | 4,653.95 mi (7,489.81 km) |
| Porsgrunn to Bozeman (Montana) | 4,456.14 mi (7,171.47 km) |
| Porsgrunn to Bradenton (Florida) | 4,683.92 mi (7,538.04 km) |
| Porsgrunn to Bradfordville (Florida) | 4,561.87 mi (7,341.62 km) |
| Porsgrunn to Bradley (Illinois) | 4,080.94 mi (6,567.64 km) |
| Porsgrunn to Bradley Gardens (New Jersey) | 3,688.88 mi (5,936.68 km) |
| Porsgrunn to Brainerd (Minnesota) | 3,979.58 mi (6,404.51 km) |
| Porsgrunn to Brambleton (Virginia) | 3,869.89 mi (6,227.98 km) |
| Porsgrunn to Brandermill (Virginia) | 3,958.22 mi (6,370.14 km) |
