| Philadelphia to Cernavoda | 4,910.04 mi (7,901.94 km) |
| Philadelphia to Chitila | 4,822.44 mi (7,760.97 km) |
| Philadelphia to Cisnadie | 4,701.27 mi (7,565.96 km) |
| Philadelphia to Cluj-Napoca | 4,637.23 mi (7,462.90 km) |
| Philadelphia to Codlea | 4,752.53 mi (7,648.46 km) |
| Philadelphia to Comanesti | 4,761.44 mi (7,662.79 km) |
| Philadelphia to Comarnic | 4,778.23 mi (7,689.81 km) |
| Philadelphia to Constanta | 4,940.69 mi (7,951.27 km) |
| Philadelphia to Corabia | 4,793.70 mi (7,714.71 km) |
| Philadelphia to Costesti | 4,772.21 mi (7,680.12 km) |
| Philadelphia to Covasna | 4,775.09 mi (7,684.77 km) |
| Philadelphia to Craiova | 4,743.39 mi (7,633.76 km) |
| Philadelphia to Cristuru Secuiesc | 4,712.54 mi (7,584.10 km) |
| Philadelphia to Cugir | 4,665.05 mi (7,507.68 km) |
| Philadelphia to Cumpana | 4,939.99 mi (7,950.14 km) |
