| Duluth to Bixby (Oklahoma) | 772.75 mi (1,243.63 km) |
| Duluth to Black Forest (Colorado) | 826.76 mi (1,330.55 km) |
| Duluth to Blackfoot (Idaho) | 1,014.88 mi (1,633.28 km) |
| Duluth to Blackhawk (California) | 1,630.17 mi (2,623.50 km) |
| Duluth to Blacksburg (Virginia) | 890.57 mi (1,433.24 km) |
| Duluth to Blackwells Mills (New Jersey) | 976.37 mi (1,571.32 km) |
| Duluth to Blaine (Minnesota) | 122.25 mi (196.74 km) |
| Duluth to Bloomingdale (Florida) | 1,411.24 mi (2,271.18 km) |
| Duluth to Bloomingdale (Illinois) | 388.72 mi (625.58 km) |
| Duluth to Bloomington (California) | 1,581.94 mi (2,545.88 km) |
| Duluth to Bloomington (Illinois) | 463.13 mi (745.34 km) |
| Duluth to Bloomington (Indiana) | 597.24 mi (961.16 km) |
| Duluth to Bloomington (Minnesota) | 145.83 mi (234.69 km) |
| Duluth to Bloomsburg (Pennsylvania) | 874.74 mi (1,407.76 km) |
| Duluth to Blue Ash (Ohio) | 650.52 mi (1,046.91 km) |
