| Castle Rock to Jeffersonville (Indiana) | 1,030.95 mi (1,659.16 km) |
| Castle Rock to Jenison (Michigan) | 1,017.20 mi (1,637.02 km) |
| Castle Rock to Jenks (Oklahoma) | 538.38 mi (866.44 km) |
| Castle Rock to Jennings (Missouri) | 783.27 mi (1,260.54 km) |
| Castle Rock to Jensen Beach (Florida) | 1,641.76 mi (2,642.16 km) |
| Castle Rock to Jericho (New York) | 1,649.38 mi (2,654.42 km) |
| Castle Rock to Jerome (Idaho) | 553.46 mi (890.70 km) |
| Castle Rock to Jersey City (New Jersey) | 1,622.57 mi (2,611.27 km) |
| Castle Rock to Jessup (Maryland) | 1,495.94 mi (2,407.49 km) |
| Castle Rock to Johns Creek (Georgia) | 1,198.84 mi (1,929.35 km) |
| Castle Rock to Johnson City (New York) | 1,516.78 mi (2,441.02 km) |
| Castle Rock to Johnson City (Tennessee) | 1,240.39 mi (1,996.22 km) |
| Castle Rock to Johnston (Iowa) | 605.46 mi (974.39 km) |
| Castle Rock to Johnstown (Colorado) | 67.46 mi (108.56 km) |
| Castle Rock to Johnstown (Pennsylvania) | 1,372.29 mi (2,208.48 km) |
