| Boston to Kaneohe (Hawaii) | 7,127.29 mi (11,470.26 km) |
| Boston to Kankakee (Illinois) | 3,951.12 mi (6,358.71 km) |
| Boston to Kannapolis (North Carolina) | 3,944.77 mi (6,348.49 km) |
| Boston to Kansas City (Kansas) | 4,302.48 mi (6,924.17 km) |
| Boston to Kansas City (Missouri) | 4,295.55 mi (6,913.01 km) |
| Boston to Kapaa (Hawaii) | 7,103.85 mi (11,432.54 km) |
| Boston to Kapolei (Hawaii) | 7,135.89 mi (11,484.11 km) |
| Boston to Katy (Texas) | 4,829.40 mi (7,772.17 km) |
| Boston to Kaukauna (Wisconsin) | 3,814.58 mi (6,138.97 km) |
| Boston to Kaysville (Utah) | 4,783.98 mi (7,699.08 km) |
| Boston to Kearney (Missouri) | 4,276.77 mi (6,882.79 km) |
| Boston to Kearney (Nebraska) | 4,376.26 mi (7,042.92 km) |
| Boston to Kearns (Utah) | 4,806.89 mi (7,735.94 km) |
| Boston to Kearny (New Jersey) | 3,437.26 mi (5,531.74 km) |
| Boston to Keene (New Hampshire) | 3,268.26 mi (5,259.76 km) |
