| Castle Rock to Keizer (Oregon) | 1,005.36 mi (1,617.97 km) |
| Castle Rock to Keller (Texas) | 615.35 mi (990.31 km) |
| Castle Rock to Kelso (Washington) | 1,023.82 mi (1,647.68 km) |
| Castle Rock to Kemp Mill (Maryland) | 1,484.28 mi (2,388.72 km) |
| Castle Rock to Ken Caryl (Colorado) | 19.64 mi (31.61 km) |
| Castle Rock to Kendale Lakes (Florida) | 1,699.62 mi (2,735.28 km) |
| Castle Rock to Kendall (Florida) | 1,703.82 mi (2,742.03 km) |
| Castle Rock to Kendall Park (New Jersey) | 1,599.42 mi (2,574.02 km) |
| Castle Rock to Kendall West (Florida) | 1,698.21 mi (2,733.01 km) |
| Castle Rock to Kenmore (New York) | 1,368.19 mi (2,201.89 km) |
| Castle Rock to Kenmore (Washington) | 1,041.90 mi (1,676.77 km) |
| Castle Rock to Kenner (Louisiana) | 1,049.55 mi (1,689.09 km) |
| Castle Rock to Kennesaw (Georgia) | 1,177.35 mi (1,894.76 km) |
| Castle Rock to Kennett (Missouri) | 835.65 mi (1,344.85 km) |
| Castle Rock to Kennewick (Washington) | 863.64 mi (1,389.89 km) |
