| Thornton to Kaneohe (Hawaii) | 7,046.78 mi (11,340.69 km) |
| Thornton to Kankakee (Illinois) | 3,858.81 mi (6,210.15 km) |
| Thornton to Kannapolis (North Carolina) | 3,856.79 mi (6,206.91 km) |
| Thornton to Kansas City (Kansas) | 4,209.38 mi (6,774.34 km) |
| Thornton to Kansas City (Missouri) | 4,202.48 mi (6,763.23 km) |
| Thornton to Kapaa (Hawaii) | 7,024.74 mi (11,305.22 km) |
| Thornton to Kapolei (Hawaii) | 7,055.59 mi (11,354.87 km) |
| Thornton to Katy (Texas) | 4,738.25 mi (7,625.47 km) |
| Thornton to Kaukauna (Wisconsin) | 3,721.43 mi (5,989.06 km) |
| Thornton to Kaysville (Utah) | 4,690.10 mi (7,547.99 km) |
| Thornton to Kearney (Missouri) | 4,183.68 mi (6,732.99 km) |
| Thornton to Kearney (Nebraska) | 4,282.43 mi (6,891.90 km) |
| Thornton to Kearns (Utah) | 4,712.98 mi (7,584.81 km) |
| Thornton to Kearny (New Jersey) | 3,349.04 mi (5,389.76 km) |
| Thornton to Keene (New Hampshire) | 3,179.43 mi (5,116.80 km) |
