| Le Mars to Brown Deer (Wisconsin) | 415.15 mi (668.11 km) |
| Le Mars to Brownsburg (Indiana) | 546.99 mi (880.30 km) |
| Le Mars to Brownsville (Florida) | 1,477.73 mi (2,378.18 km) |
| Le Mars to Brownsville (Texas) | 1,161.90 mi (1,869.90 km) |
| Le Mars to Brownwood (Texas) | 780.00 mi (1,255.29 km) |
| Le Mars to Brunswick (Georgia) | 1,139.05 mi (1,833.12 km) |
| Le Mars to Brunswick (Ohio) | 743.50 mi (1,196.54 km) |
| Le Mars to Brushy Creek (Texas) | 852.04 mi (1,371.22 km) |
| Le Mars to Bryan (Texas) | 837.21 mi (1,347.36 km) |
| Le Mars to Bryant (Arkansas) | 597.95 mi (962.31 km) |
| Le Mars to Bryn Mawr-Skyway (Washington) | 1,304.80 mi (2,099.88 km) |
| Le Mars to Buckeye (Arizona) | 1,100.85 mi (1,771.65 km) |
| Le Mars to Buckhall (Virginia) | 1,016.98 mi (1,636.67 km) |
| Le Mars to Bucyrus (Ohio) | 692.84 mi (1,115.01 km) |
| Le Mars to Buda (Texas) | 882.72 mi (1,420.60 km) |
