| Duncan to Cernavoda | 6,019.00 mi (9,686.65 km) |
| Duncan to Chitila | 5,941.85 mi (9,562.48 km) |
| Duncan to Cisnadie | 5,819.98 mi (9,366.35 km) |
| Duncan to Cluj-Napoca | 5,749.19 mi (9,252.43 km) |
| Duncan to Codlea | 5,864.20 mi (9,437.52 km) |
| Duncan to Comanesti | 5,860.52 mi (9,431.60 km) |
| Duncan to Comarnic | 5,892.90 mi (9,483.71 km) |
| Duncan to Constanta | 6,047.58 mi (9,732.65 km) |
| Duncan to Corabia | 5,927.85 mi (9,539.95 km) |
| Duncan to Costesti | 5,896.37 mi (9,489.29 km) |
| Duncan to Covasna | 5,881.13 mi (9,464.77 km) |
| Duncan to Craiova | 5,876.37 mi (9,457.10 km) |
| Duncan to Cristuru Secuiesc | 5,820.98 mi (9,367.96 km) |
| Duncan to Cugir | 5,786.83 mi (9,313.00 km) |
| Duncan to Cumpana | 6,047.83 mi (9,733.04 km) |
