| Castle Rock to Corinth (Mississippi) | 948.66 mi (1,526.72 km) |
| Castle Rock to Corinth (Texas) | 610.74 mi (982.89 km) |
| Castle Rock to Cornelius (North Carolina) | 1,338.55 mi (2,154.19 km) |
| Castle Rock to Cornelius (Oregon) | 1,017.19 mi (1,637.01 km) |
| Castle Rock to Corning (New York) | 1,460.72 mi (2,350.80 km) |
| Castle Rock to Corona (California) | 800.22 mi (1,287.82 km) |
| Castle Rock to Coronado (California) | 828.25 mi (1,332.94 km) |
| Castle Rock to Corpus Christi (Texas) | 912.04 mi (1,467.78 km) |
| Castle Rock to Corsicana (Texas) | 688.74 mi (1,108.43 km) |
| Castle Rock to Cortland (New York) | 1,504.67 mi (2,421.53 km) |
| Castle Rock to Corvallis (Oregon) | 1,009.41 mi (1,624.49 km) |
| Castle Rock to Coshocton (Ohio) | 1,218.97 mi (1,961.75 km) |
| Castle Rock to Costa Mesa (California) | 824.34 mi (1,326.64 km) |
| Castle Rock to Coto de Caza (California) | 811.13 mi (1,305.39 km) |
| Castle Rock to Cottage Grove (Minnesota) | 716.62 mi (1,153.29 km) |
