| Thornton to Kenosha (Wisconsin) | 3,787.74 mi (6,095.78 km) |
| Thornton to Kent (Ohio) | 3,611.66 mi (5,812.41 km) |
| Thornton to Kent (Washington) | 4,625.28 mi (7,443.67 km) |
| Thornton to Kentwood (Michigan) | 3,689.35 mi (5,937.43 km) |
| Thornton to Kerman (California) | 5,182.74 mi (8,340.81 km) |
| Thornton to Kernersville (North Carolina) | 3,803.90 mi (6,121.79 km) |
| Thornton to Kerrville (Texas) | 4,848.85 mi (7,803.47 km) |
| Thornton to Kettering (Maryland) | 3,540.44 mi (5,697.80 km) |
| Thornton to Kettering (Ohio) | 3,787.16 mi (6,094.85 km) |
| Thornton to Kewanee (Illinois) | 3,928.09 mi (6,321.65 km) |
| Thornton to Key Biscayne (Florida) | 4,336.82 mi (6,979.43 km) |
| Thornton to Key Largo (Florida) | 4,376.68 mi (7,043.59 km) |
| Thornton to Key West (Florida) | 4,461.43 mi (7,179.97 km) |
| Thornton to Keystone (Florida) | 4,307.51 mi (6,932.27 km) |
| Thornton to Kihei (Hawaii) | 7,067.70 mi (11,374.36 km) |
