| Clay to Cernavoda | 5,663.92 mi (9,115.19 km) |
| Clay to Chitila | 5,578.36 mi (8,977.51 km) |
| Clay to Cisnadie | 5,456.73 mi (8,781.76 km) |
| Clay to Cluj-Napoca | 5,391.03 mi (8,676.02 km) |
| Clay to Codlea | 5,506.59 mi (8,861.99 km) |
| Clay to Comanesti | 5,512.62 mi (8,871.70 km) |
| Clay to Comarnic | 5,533.01 mi (8,904.53 km) |
| Clay to Constanta | 5,694.19 mi (9,163.91 km) |
| Clay to Corabia | 5,552.56 mi (8,935.98 km) |
| Clay to Costesti | 5,529.01 mi (8,898.08 km) |
| Clay to Covasna | 5,527.94 mi (8,896.35 km) |
| Clay to Craiova | 5,501.91 mi (8,854.47 km) |
| Clay to Cristuru Secuiesc | 5,465.75 mi (8,796.28 km) |
| Clay to Cugir | 5,421.08 mi (8,724.39 km) |
| Clay to Cumpana | 5,693.70 mi (9,163.12 km) |
