| Castle Rock to Chickasha (Oklahoma) | 483.63 mi (778.33 km) |
| Castle Rock to Chico (California) | 902.51 mi (1,452.45 km) |
| Castle Rock to Chicopee (Massachusetts) | 1,689.91 mi (2,719.65 km) |
| Castle Rock to Chillicothe (Ohio) | 1,164.94 mi (1,874.78 km) |
| Castle Rock to Chillum (Maryland) | 1,487.41 mi (2,393.75 km) |
| Castle Rock to Chino (California) | 800.68 mi (1,288.57 km) |
| Castle Rock to Chino Hills (California) | 804.79 mi (1,295.19 km) |
| Castle Rock to Chino Valley (Arizona) | 524.46 mi (844.04 km) |
| Castle Rock to Chippewa Falls (Wisconsin) | 787.92 mi (1,268.03 km) |
| Castle Rock to Choctaw (Oklahoma) | 495.45 mi (797.36 km) |
| Castle Rock to Chowchilla (California) | 848.14 mi (1,364.96 km) |
| Castle Rock to Christiansburg (Virginia) | 1,331.35 mi (2,142.60 km) |
| Castle Rock to Chubbuck (Idaho) | 465.40 mi (748.99 km) |
| Castle Rock to Chula Vista (California) | 823.08 mi (1,324.63 km) |
| Castle Rock to Cibolo (Texas) | 775.85 mi (1,248.60 km) |
