| Castricum to Keizer (Oregon) | 5,018.35 mi (8,076.25 km) |
| Castricum to Keller (Texas) | 4,901.98 mi (7,888.98 km) |
| Castricum to Kelso (Washington) | 4,948.29 mi (7,963.50 km) |
| Castricum to Kemp Mill (Maryland) | 3,825.46 mi (6,156.48 km) |
| Castricum to Ken Caryl (Colorado) | 4,814.77 mi (7,748.62 km) |
| Castricum to Kendale Lakes (Florida) | 4,626.30 mi (7,445.31 km) |
| Castricum to Kendall (Florida) | 4,626.16 mi (7,445.08 km) |
| Castricum to Kendall Park (New Jersey) | 3,665.04 mi (5,898.31 km) |
| Castricum to Kendall West (Florida) | 4,627.65 mi (7,447.49 km) |
| Castricum to Kenmore (New York) | 3,714.56 mi (5,978.01 km) |
| Castricum to Kenmore (Washington) | 4,836.19 mi (7,783.09 km) |
| Castricum to Kenner (Louisiana) | 4,794.83 mi (7,716.54 km) |
| Castricum to Kennesaw (Georgia) | 4,368.25 mi (7,030.02 km) |
| Castricum to Kennett (Missouri) | 4,463.09 mi (7,182.66 km) |
| Castricum to Kennewick (Washington) | 4,850.97 mi (7,806.87 km) |
