| Rio Grande City to Cernavoda | 6,510.71 mi (10,477.98 km) |
| Rio Grande City to Chitila | 6,428.97 mi (10,346.42 km) |
| Rio Grande City to Cisnadie | 6,306.93 mi (10,150.03 km) |
| Rio Grande City to Cluj-Napoca | 6,238.66 mi (10,040.15 km) |
| Rio Grande City to Codlea | 6,354.23 mi (10,226.15 km) |
| Rio Grande City to Comanesti | 6,355.49 mi (10,228.17 km) |
| Rio Grande City to Comarnic | 6,381.81 mi (10,270.53 km) |
| Rio Grande City to Constanta | 6,540.23 mi (10,525.48 km) |
| Rio Grande City to Corabia | 6,408.46 mi (10,313.41 km) |
| Rio Grande City to Costesti | 6,381.29 mi (10,269.69 km) |
| Rio Grande City to Covasna | 6,373.48 mi (10,257.12 km) |
| Rio Grande City to Craiova | 6,357.33 mi (10,231.13 km) |
| Rio Grande City to Cristuru Secuiesc | 6,312.14 mi (10,158.41 km) |
| Rio Grande City to Cugir | 6,272.37 mi (10,094.40 km) |
| Rio Grande City to Cumpana | 6,540.10 mi (10,525.27 km) |
