| Portlethen to Black Forest (Colorado) | 4,427.39 mi (7,125.19 km) |
| Portlethen to Blackfoot (Idaho) | 4,425.98 mi (7,122.92 km) |
| Portlethen to Blackhawk (California) | 5,007.05 mi (8,058.07 km) |
| Portlethen to Blacksburg (Virginia) | 3,692.81 mi (5,943.01 km) |
| Portlethen to Blackwells Mills (New Jersey) | 3,315.08 mi (5,335.10 km) |
| Portlethen to Blaine (Minnesota) | 3,730.07 mi (6,002.97 km) |
| Portlethen to Bloomingdale (Florida) | 4,259.86 mi (6,855.59 km) |
| Portlethen to Bloomingdale (Illinois) | 3,722.57 mi (5,990.90 km) |
| Portlethen to Bloomington (California) | 5,104.30 mi (8,214.58 km) |
| Portlethen to Bloomington (Illinois) | 3,829.05 mi (6,162.26 km) |
| Portlethen to Bloomington (Indiana) | 3,811.65 mi (6,134.26 km) |
| Portlethen to Bloomington (Minnesota) | 3,750.96 mi (6,036.59 km) |
| Portlethen to Bloomsburg (Pennsylvania) | 3,357.00 mi (5,402.57 km) |
| Portlethen to Blue Ash (Ohio) | 3,731.26 mi (6,004.89 km) |
| Portlethen to Blue Island (Illinois) | 3,723.40 mi (5,992.23 km) |
