| Castle Rock to Jacksonville (Texas) | 742.21 mi (1,194.47 km) |
| Castle Rock to Jacksonville Beach (Florida) | 1,465.16 mi (2,357.94 km) |
| Castle Rock to James Island (South Carolina) | 1,459.77 mi (2,349.28 km) |
| Castle Rock to Jamestown (New York) | 1,349.07 mi (2,171.11 km) |
| Castle Rock to Jamestown (North Dakota) | 605.45 mi (974.38 km) |
| Castle Rock to Janesville (Wisconsin) | 855.21 mi (1,376.33 km) |
| Castle Rock to Jasmine Estates (Florida) | 1,478.56 mi (2,379.51 km) |
| Castle Rock to Jasper (Alabama) | 1,044.98 mi (1,681.73 km) |
| Castle Rock to Jasper (Indiana) | 964.23 mi (1,551.79 km) |
| Castle Rock to Jefferson (Georgia) | 1,227.45 mi (1,975.40 km) |
| Castle Rock to Jefferson (Louisiana) | 1,056.29 mi (1,699.94 km) |
| Castle Rock to Jefferson City (Missouri) | 682.72 mi (1,098.74 km) |
| Castle Rock to Jefferson Hills (Pennsylvania) | 1,319.36 mi (2,123.30 km) |
| Castle Rock to Jefferson Valley-Yorktown (New York) | 1,631.94 mi (2,626.36 km) |
| Castle Rock to Jeffersontown (Kentucky) | 1,039.66 mi (1,673.17 km) |
