| Willoughby to Cernavoda | 5,067.96 mi (8,156.10 km) |
| Willoughby to Chitila | 4,984.92 mi (8,022.46 km) |
| Willoughby to Cisnadie | 4,862.96 mi (7,826.17 km) |
| Willoughby to Cluj-Napoca | 4,795.47 mi (7,717.57 km) |
| Willoughby to Codlea | 4,911.10 mi (7,903.65 km) |
| Willoughby to Comanesti | 4,914.20 mi (7,908.63 km) |
| Willoughby to Comarnic | 4,938.31 mi (7,947.43 km) |
| Willoughby to Constanta | 5,097.78 mi (8,204.08 km) |
| Willoughby to Corabia | 4,963.15 mi (7,987.42 km) |
| Willoughby to Costesti | 4,936.76 mi (7,944.95 km) |
| Willoughby to Covasna | 4,931.12 mi (7,935.87 km) |
| Willoughby to Craiova | 4,912.10 mi (7,905.25 km) |
| Willoughby to Cristuru Secuiesc | 4,869.43 mi (7,836.60 km) |
| Willoughby to Cugir | 4,828.07 mi (7,770.02 km) |
| Willoughby to Cumpana | 5,097.51 mi (8,203.64 km) |
