| Clayton to Cernavoda | 1,485.78 mi (2,391.14 km) |
| Clayton to Chitila | 1,397.77 mi (2,249.49 km) |
| Clayton to Cisnadie | 1,276.56 mi (2,054.42 km) |
| Clayton to Cluj-Napoca | 1,213.29 mi (1,952.59 km) |
| Clayton to Codlea | 1,328.30 mi (2,137.69 km) |
| Clayton to Comanesti | 1,340.37 mi (2,157.12 km) |
| Clayton to Comarnic | 1,353.63 mi (2,178.46 km) |
| Clayton to Constanta | 1,516.66 mi (2,440.82 km) |
| Clayton to Corabia | 1,371.76 mi (2,207.63 km) |
| Clayton to Costesti | 1,347.86 mi (2,169.18 km) |
| Clayton to Covasna | 1,351.83 mi (2,175.57 km) |
| Clayton to Craiova | 1,320.90 mi (2,125.79 km) |
| Clayton to Cristuru Secuiesc | 1,289.01 mi (2,074.47 km) |
| Clayton to Cugir | 1,240.38 mi (1,996.20 km) |
| Clayton to Cumpana | 1,515.81 mi (2,439.47 km) |
