| Portlethen to Brownsburg (Indiana) | 3,771.90 mi (6,070.29 km) |
| Portlethen to Brownsville (Florida) | 4,297.62 mi (6,916.35 km) |
| Portlethen to Brownsville (Texas) | 4,918.51 mi (7,915.58 km) |
| Portlethen to Brownwood (Texas) | 4,649.50 mi (7,482.65 km) |
| Portlethen to Brunswick (Georgia) | 4,053.03 mi (6,522.72 km) |
| Portlethen to Brunswick (Ohio) | 3,538.16 mi (5,694.12 km) |
| Portlethen to Brushy Creek (Texas) | 4,673.87 mi (7,521.87 km) |
| Portlethen to Bryan (Texas) | 4,617.92 mi (7,431.82 km) |
| Portlethen to Bryant (Arkansas) | 4,263.80 mi (6,861.92 km) |
| Portlethen to Bryn Mawr-Skyway (Washington) | 4,439.44 mi (7,144.59 km) |
| Portlethen to Buckeye (Arizona) | 4,998.24 mi (8,043.88 km) |
| Portlethen to Buckhall (Virginia) | 3,507.38 mi (5,644.59 km) |
| Portlethen to Bucyrus (Ohio) | 3,601.44 mi (5,795.96 km) |
| Portlethen to Buda (Texas) | 4,702.22 mi (7,567.49 km) |
| Portlethen to Buena Park (California) | 5,133.99 mi (8,262.36 km) |
