| Castle Rock to Hicksville (New York) | 1,650.47 mi (2,656.17 km) |
| Castle Rock to Hidalgo (Texas) | 993.08 mi (1,598.21 km) |
| Castle Rock to High Point (North Carolina) | 1,374.80 mi (2,212.53 km) |
| Castle Rock to Highland (California) | 771.65 mi (1,241.85 km) |
| Castle Rock to Highland (Illinois) | 814.05 mi (1,310.09 km) |
| Castle Rock to Highland (Indiana) | 925.01 mi (1,488.65 km) |
| Castle Rock to Highland (Utah) | 374.96 mi (603.44 km) |
| Castle Rock to Highland City (Florida) | 1,531.83 mi (2,465.24 km) |
| Castle Rock to Highland Park (Illinois) | 910.86 mi (1,465.89 km) |
| Castle Rock to Highland Park (New Jersey) | 1,605.69 mi (2,584.10 km) |
| Castle Rock to Highland Springs (Virginia) | 1,488.66 mi (2,395.76 km) |
| Castle Rock to Highland Village (Texas) | 613.73 mi (987.70 km) |
| Castle Rock to Highlands Ranch (Colorado) | 13.04 mi (20.99 km) |
| Castle Rock to Hillcrest (California) | 821.09 mi (1,321.41 km) |
| Castle Rock to Hillcrest Heights (Maryland) | 1,489.77 mi (2,397.56 km) |
