| Duluth to Bicaz | 4,967.11 mi (7,993.79 km) |
| Duluth to Bistrita | 4,907.26 mi (7,897.48 km) |
| Duluth to Blaj | 4,939.68 mi (7,949.64 km) |
| Duluth to Bocsa | 4,911.83 mi (7,904.82 km) |
| Duluth to Boldesti-Scaeni | 5,065.91 mi (8,152.79 km) |
| Duluth to Bolintin Vale | 5,088.72 mi (8,189.50 km) |
| Duluth to Borsa | 4,884.72 mi (7,861.20 km) |
| Duluth to Botosani | 4,939.50 mi (7,949.36 km) |
| Duluth to Brad | 4,906.95 mi (7,896.97 km) |
| Duluth to Bragadiru | 5,099.59 mi (8,207.00 km) |
| Duluth to Braila | 5,111.54 mi (8,226.22 km) |
| Duluth to Brasov | 5,019.14 mi (8,077.53 km) |
| Duluth to Breaza | 5,046.16 mi (8,121.00 km) |
| Duluth to Bucharest | 5,100.27 mi (8,208.10 km) |
| Duluth to Buftea | 5,088.12 mi (8,188.54 km) |
