| Duluth to Blue Island (Illinois) | 416.70 mi (670.61 km) |
| Duluth to Blue Springs (Missouri) | 547.08 mi (880.44 km) |
| Duluth to Bluffdale (Utah) | 1,077.85 mi (1,734.63 km) |
| Duluth to Bluffton (Indiana) | 542.34 mi (872.81 km) |
| Duluth to Bluffton (South Carolina) | 1,167.52 mi (1,878.94 km) |
| Duluth to Blythe (California) | 1,485.39 mi (2,390.51 km) |
| Duluth to Blytheville (Arkansas) | 758.03 mi (1,219.94 km) |
| Duluth to Boca Raton (Florida) | 1,555.40 mi (2,503.18 km) |
| Duluth to Boerne (Texas) | 1,226.04 mi (1,973.12 km) |
| Duluth to Bogalusa (Louisiana) | 1,111.76 mi (1,789.20 km) |
| Duluth to Boiling Springs (South Carolina) | 966.91 mi (1,556.10 km) |
| Duluth to Boise (Idaho) | 1,188.58 mi (1,912.84 km) |
| Duluth to Bolingbrook (Illinois) | 404.11 mi (650.34 km) |
| Duluth to Bolivar (Missouri) | 636.91 mi (1,025.01 km) |
| Duluth to Bon Air (Virginia) | 980.03 mi (1,577.21 km) |
