| Rapid City to Cullman (Alabama) | 1,109.20 mi (1,785.09 km) |
| Rapid City to Culpeper (Virginia) | 1,359.56 mi (2,188.01 km) |
| Rapid City to Culver City (California) | 1,067.90 mi (1,718.62 km) |
| Rapid City to Cumberland (Maryland) | 1,290.07 mi (2,076.16 km) |
| Rapid City to Cupertino (California) | 1,087.71 mi (1,750.51 km) |
| Rapid City to Cutler Bay (Florida) | 1,809.51 mi (2,912.12 km) |
| Rapid City to Cutlerville (Michigan) | 882.48 mi (1,420.22 km) |
| Rapid City to Cuyahoga Falls (Ohio) | 1,118.05 mi (1,799.32 km) |
| Rapid City to Cypress (California) | 1,062.86 mi (1,710.50 km) |
| Rapid City to Cypress Gardens (Florida) | 1,627.73 mi (2,619.57 km) |
| Rapid City to Cypress Lake (Florida) | 1,696.64 mi (2,730.48 km) |
| Rapid City to D'Iberville (Mississippi) | 1,222.19 mi (1,966.93 km) |
| Rapid City to Dakota Ridge (Colorado) | 322.99 mi (519.81 km) |
| Rapid City to Dale City (Virginia) | 1,386.75 mi (2,231.76 km) |
| Rapid City to Dallas (Georgia) | 1,206.49 mi (1,941.65 km) |
