| Duluth to Kenosha (Wisconsin) | 357.11 mi (574.72 km) |
| Duluth to Kent (Ohio) | 661.20 mi (1,064.10 km) |
| Duluth to Kent (Washington) | 1,406.73 mi (2,263.91 km) |
| Duluth to Kentwood (Michigan) | 418.27 mi (673.14 km) |
| Duluth to Kerman (California) | 1,586.71 mi (2,553.56 km) |
| Duluth to Kernersville (North Carolina) | 963.78 mi (1,551.06 km) |
| Duluth to Kerrville (Texas) | 1,215.49 mi (1,956.14 km) |
| Duluth to Kettering (Maryland) | 947.00 mi (1,524.05 km) |
| Duluth to Kettering (Ohio) | 632.60 mi (1,018.07 km) |
| Duluth to Kewanee (Illinois) | 397.93 mi (640.41 km) |
| Duluth to Key Biscayne (Florida) | 1,598.08 mi (2,571.86 km) |
| Duluth to Key Largo (Florida) | 1,629.33 mi (2,622.16 km) |
| Duluth to Key West (Florida) | 1,637.76 mi (2,635.72 km) |
| Duluth to Keystone (Florida) | 1,387.91 mi (2,233.62 km) |
| Duluth to Kihei (Hawaii) | 3,979.03 mi (6,403.62 km) |
