| Darby to Blue Island (Illinois) | 660.09 mi (1,062.31 km) |
| Darby to Blue Springs (Missouri) | 1,014.07 mi (1,631.98 km) |
| Darby to Bluffdale (Utah) | 1,921.92 mi (3,093.03 km) |
| Darby to Bluffton (Indiana) | 524.86 mi (844.68 km) |
| Darby to Bluffton (South Carolina) | 619.25 mi (996.59 km) |
| Darby to Blythe (California) | 2,202.99 mi (3,545.37 km) |
| Darby to Blytheville (Arkansas) | 843.15 mi (1,356.92 km) |
| Darby to Boca Raton (Florida) | 976.59 mi (1,571.67 km) |
| Darby to Boerne (Texas) | 1,497.18 mi (2,409.48 km) |
| Darby to Bogalusa (Louisiana) | 1,034.94 mi (1,665.58 km) |
| Darby to Boiling Springs (South Carolina) | 498.84 mi (802.81 km) |
| Darby to Boise (Idaho) | 2,105.23 mi (3,388.04 km) |
| Darby to Bolingbrook (Illinois) | 681.93 mi (1,097.46 km) |
| Darby to Bolivar (Missouri) | 989.38 mi (1,592.26 km) |
| Darby to Bon Air (Virginia) | 207.49 mi (333.93 km) |
