| Rapid City to Cernavoda | 5,633.25 mi (9,065.84 km) |
| Rapid City to Chitila | 5,567.26 mi (8,959.63 km) |
| Rapid City to Cisnadie | 5,447.89 mi (8,767.53 km) |
| Rapid City to Cluj-Napoca | 5,372.97 mi (8,646.97 km) |
| Rapid City to Codlea | 5,484.75 mi (8,826.85 km) |
| Rapid City to Comanesti | 5,470.39 mi (8,803.73 km) |
| Rapid City to Comarnic | 5,515.35 mi (8,876.09 km) |
| Rapid City to Constanta | 5,659.32 mi (9,107.79 km) |
| Rapid City to Corabia | 5,567.15 mi (8,959.46 km) |
| Rapid City to Costesti | 5,527.22 mi (8,895.20 km) |
| Rapid City to Covasna | 5,496.37 mi (8,845.55 km) |
| Rapid City to Craiova | 5,515.87 mi (8,876.94 km) |
| Rapid City to Cristuru Secuiesc | 5,439.83 mi (8,754.56 km) |
| Rapid City to Cugir | 5,418.35 mi (8,720.00 km) |
| Rapid City to Cumpana | 5,660.37 mi (9,109.49 km) |
