| Duluth to Brown Deer (Wisconsin) | 321.37 mi (517.20 km) |
| Duluth to Brownsburg (Indiana) | 559.83 mi (900.96 km) |
| Duluth to Brownsville (Florida) | 1,587.93 mi (2,555.53 km) |
| Duluth to Brownsville (Texas) | 1,464.92 mi (2,357.56 km) |
| Duluth to Brownwood (Texas) | 1,102.10 mi (1,773.66 km) |
| Duluth to Brunswick (Georgia) | 1,219.92 mi (1,963.27 km) |
| Duluth to Brunswick (Ohio) | 638.58 mi (1,027.70 km) |
| Duluth to Brushy Creek (Texas) | 1,162.78 mi (1,871.32 km) |
| Duluth to Bryan (Texas) | 1,135.92 mi (1,828.09 km) |
| Duluth to Bryant (Arkansas) | 840.40 mi (1,352.50 km) |
| Duluth to Bryn Mawr-Skyway (Washington) | 1,406.84 mi (2,264.09 km) |
| Duluth to Buckeye (Arizona) | 1,415.04 mi (2,277.28 km) |
| Duluth to Buckhall (Virginia) | 927.61 mi (1,492.85 km) |
| Duluth to Bucyrus (Ohio) | 615.06 mi (989.85 km) |
| Duluth to Buda (Texas) | 1,193.68 mi (1,921.04 km) |
