| Castle Rock to Chantilly (Virginia) | 1,463.69 mi (2,355.58 km) |
| Castle Rock to Chaparral (New Mexico) | 514.01 mi (827.21 km) |
| Castle Rock to Chapel Hill (North Carolina) | 1,427.08 mi (2,296.66 km) |
| Castle Rock to Charleston (Illinois) | 888.68 mi (1,430.20 km) |
| Castle Rock to Charleston (South Carolina) | 1,455.83 mi (2,342.93 km) |
| Castle Rock to Charleston (West Virginia) | 1,247.88 mi (2,008.27 km) |
| Castle Rock to Charlotte (North Carolina) | 1,347.25 mi (2,168.18 km) |
| Castle Rock to Charlottesville (Virginia) | 1,419.65 mi (2,284.70 km) |
| Castle Rock to Chaska (Minnesota) | 687.22 mi (1,105.98 km) |
| Castle Rock to Chatham (Illinois) | 807.26 mi (1,299.16 km) |
| Castle Rock to Chattanooga (Tennessee) | 1,116.49 mi (1,796.82 km) |
| Castle Rock to Cheat Lake (West Virginia) | 1,328.11 mi (2,137.38 km) |
| Castle Rock to Chelsea (Alabama) | 1,094.33 mi (1,761.15 km) |
| Castle Rock to Chelsea (Massachusetts) | 1,767.15 mi (2,843.96 km) |
| Castle Rock to Cheney (Washington) | 847.73 mi (1,364.28 km) |
