| Darby to Kenosha (Wisconsin) | 679.98 mi (1,094.33 km) |
| Darby to Kent (Ohio) | 331.29 mi (533.15 km) |
| Darby to Kent (Washington) | 2,365.51 mi (3,806.93 km) |
| Darby to Kentwood (Michigan) | 572.79 mi (921.81 km) |
| Darby to Kerman (California) | 2,413.07 mi (3,883.46 km) |
| Darby to Kernersville (North Carolina) | 371.90 mi (598.52 km) |
| Darby to Kerrville (Texas) | 1,507.43 mi (2,425.97 km) |
| Darby to Kettering (Maryland) | 108.35 mi (174.37 km) |
| Darby to Kettering (Ohio) | 471.83 mi (759.34 km) |
| Darby to Kewanee (Illinois) | 774.02 mi (1,245.66 km) |
| Darby to Key Biscayne (Florida) | 1,023.17 mi (1,646.63 km) |
| Darby to Key Largo (Florida) | 1,065.08 mi (1,714.08 km) |
| Darby to Key West (Florida) | 1,126.45 mi (1,812.85 km) |
| Darby to Keystone (Florida) | 915.76 mi (1,473.78 km) |
| Darby to Kihei (Hawaii) | 4,855.89 mi (7,814.80 km) |
