| Rockford to Blue Island (Illinois) | 82.32 mi (132.49 km) |
| Rockford to Blue Springs (Missouri) | 353.30 mi (568.58 km) |
| Rockford to Bluffdale (Utah) | 1,188.90 mi (1,913.35 km) |
| Rockford to Bluffton (Indiana) | 226.97 mi (365.27 km) |
| Rockford to Bluffton (South Carolina) | 824.86 mi (1,327.48 km) |
| Rockford to Blythe (California) | 1,507.53 mi (2,426.13 km) |
| Rockford to Blytheville (Arkansas) | 439.50 mi (707.31 km) |
| Rockford to Boca Raton (Florida) | 1,208.94 mi (1,945.59 km) |
| Rockford to Boerne (Texas) | 1,015.59 mi (1,634.43 km) |
| Rockford to Bogalusa (Louisiana) | 794.31 mi (1,278.32 km) |
| Rockford to Boiling Springs (South Carolina) | 627.73 mi (1,010.23 km) |
| Rockford to Boise (Idaho) | 1,371.33 mi (2,206.94 km) |
| Rockford to Bolingbrook (Illinois) | 63.16 mi (101.65 km) |
| Rockford to Bolivar (Missouri) | 395.58 mi (636.63 km) |
| Rockford to Bon Air (Virginia) | 690.90 mi (1,111.90 km) |
