| Castle Rock to Camarillo (California) | 860.16 mi (1,384.30 km) |
| Castle Rock to Camas (Washington) | 990.60 mi (1,594.22 km) |
| Castle Rock to Cambridge (Maryland) | 1,540.37 mi (2,478.98 km) |
| Castle Rock to Cambridge (Massachusetts) | 1,762.89 mi (2,837.10 km) |
| Castle Rock to Camden (Arkansas) | 777.53 mi (1,251.32 km) |
| Castle Rock to Camden (New Jersey) | 1,575.43 mi (2,535.41 km) |
| Castle Rock to Cameron Park (California) | 866.21 mi (1,394.03 km) |
| Castle Rock to Camp Pendleton South (California) | 815.94 mi (1,313.13 km) |
| Castle Rock to Camp Springs (Maryland) | 1,492.51 mi (2,401.97 km) |
| Castle Rock to Camp Verde (Arizona) | 509.35 mi (819.71 km) |
| Castle Rock to Campbell (California) | 936.66 mi (1,507.40 km) |
| Castle Rock to Campbellsville (Kentucky) | 1,063.76 mi (1,711.96 km) |
| Castle Rock to Campton Hills (Illinois) | 878.17 mi (1,413.28 km) |
| Castle Rock to Canby (Oregon) | 994.96 mi (1,601.24 km) |
| Castle Rock to Candelaria (Puerto Rico) | 2,719.23 mi (4,376.18 km) |
