| Porsgrunn to Bailey's Crossroads (Virginia) | 3,863.72 mi (6,218.06 km) |
| Porsgrunn to Bainbridge (Georgia) | 4,555.13 mi (7,330.77 km) |
| Porsgrunn to Bainbridge Island (Washington) | 4,582.19 mi (7,374.32 km) |
| Porsgrunn to Baker (Louisiana) | 4,788.80 mi (7,706.83 km) |
| Porsgrunn to Bakersfield (California) | 5,281.17 mi (8,499.22 km) |
| Porsgrunn to Balch Springs (Texas) | 4,834.55 mi (7,780.45 km) |
| Porsgrunn to Baldwin (New York) | 3,649.13 mi (5,872.71 km) |
| Porsgrunn to Baldwin (Pennsylvania) | 3,874.58 mi (6,235.53 km) |
| Porsgrunn to Baldwin Park (California) | 5,336.01 mi (8,587.48 km) |
| Porsgrunn to Ballenger Creek (Maryland) | 3,844.47 mi (6,187.07 km) |
| Porsgrunn to Ballwin (Missouri) | 4,308.72 mi (6,934.22 km) |
| Porsgrunn to Baltimore (Maryland) | 3,821.76 mi (6,150.53 km) |
| Porsgrunn to Bangor (Maine) | 3,270.94 mi (5,264.07 km) |
| Porsgrunn to Banning (California) | 5,318.80 mi (8,559.79 km) |
| Porsgrunn to Baraboo (Wisconsin) | 4,010.45 mi (6,454.19 km) |
