| Darby to Burley (Idaho) | 1,993.10 mi (3,207.58 km) |
| Darby to Burlingame (California) | 2,513.72 mi (4,045.44 km) |
| Darby to Burlington (Iowa) | 836.24 mi (1,345.80 km) |
| Darby to Burlington (Kentucky) | 508.15 mi (817.80 km) |
| Darby to Burlington (North Carolina) | 350.70 mi (564.40 km) |
| Darby to Burlington (Vermont) | 332.15 mi (534.54 km) |
| Darby to Burlington (Wisconsin) | 700.86 mi (1,127.92 km) |
| Darby to Burnsville (Minnesota) | 976.62 mi (1,571.72 km) |
| Darby to Burr Ridge (Illinois) | 673.04 mi (1,083.16 km) |
| Darby to Burton (Michigan) | 481.79 mi (775.36 km) |
| Darby to Burtonsville (Maryland) | 105.14 mi (169.21 km) |
| Darby to Butler (Pennsylvania) | 252.40 mi (406.19 km) |
| Darby to Butte (Montana) | 1,918.44 mi (3,087.43 km) |
| Darby to Byram (Mississippi) | 992.78 mi (1,597.73 km) |
| Darby to Cabot (Arkansas) | 979.20 mi (1,575.88 km) |
