| Williamstown to Cernavoda | 4,918.95 mi (7,916.28 km) |
| Williamstown to Chitila | 4,831.05 mi (7,774.82 km) |
| Williamstown to Cisnadie | 4,709.96 mi (7,579.95 km) |
| Williamstown to Cluj-Napoca | 4,646.19 mi (7,477.32 km) |
| Williamstown to Codlea | 4,761.44 mi (7,662.80 km) |
| Williamstown to Comanesti | 4,770.75 mi (7,677.78 km) |
| Williamstown to Comarnic | 4,787.02 mi (7,703.96 km) |
| Williamstown to Constanta | 4,949.65 mi (7,965.70 km) |
| Williamstown to Corabia | 4,801.80 mi (7,727.75 km) |
| Williamstown to Costesti | 4,780.68 mi (7,693.76 km) |
| Williamstown to Covasna | 4,784.18 mi (7,699.39 km) |
| Williamstown to Craiova | 4,751.57 mi (7,646.91 km) |
| Williamstown to Cristuru Secuiesc | 4,721.58 mi (7,598.64 km) |
| Williamstown to Cugir | 4,673.66 mi (7,521.53 km) |
| Williamstown to Cumpana | 4,948.92 mi (7,964.51 km) |
