| Rock Island to Brown Deer (Wisconsin) | 177.79 mi (286.12 km) |
| Rock Island to Brownsburg (Indiana) | 247.44 mi (398.21 km) |
| Rock Island to Brownsville (Florida) | 1,231.80 mi (1,982.39 km) |
| Rock Island to Brownsville (Texas) | 1,138.70 mi (1,832.55 km) |
| Rock Island to Brownwood (Texas) | 818.41 mi (1,317.11 km) |
| Rock Island to Brunswick (Georgia) | 874.12 mi (1,406.76 km) |
| Rock Island to Brunswick (Ohio) | 454.52 mi (731.48 km) |
| Rock Island to Brushy Creek (Texas) | 855.48 mi (1,376.76 km) |
| Rock Island to Bryan (Texas) | 813.23 mi (1,308.77 km) |
| Rock Island to Bryant (Arkansas) | 484.83 mi (780.26 km) |
| Rock Island to Bryn Mawr-Skyway (Washington) | 1,602.92 mi (2,579.65 km) |
| Rock Island to Buckeye (Arizona) | 1,326.38 mi (2,134.60 km) |
| Rock Island to Buckhall (Virginia) | 718.88 mi (1,156.93 km) |
| Rock Island to Bucyrus (Ohio) | 398.56 mi (641.42 km) |
| Rock Island to Buda (Texas) | 885.55 mi (1,425.16 km) |
