| Philadelphia to Cognac | 3,669.41 mi (5,905.35 km) |
| Philadelphia to Cogolin | 4,047.06 mi (6,513.11 km) |
| Philadelphia to Colmar | 3,935.39 mi (6,333.40 km) |
| Philadelphia to Colombes | 3,697.88 mi (5,951.17 km) |
| Philadelphia to Colomiers | 3,801.96 mi (6,118.66 km) |
| Philadelphia to Combs-la-Ville | 3,717.40 mi (5,982.58 km) |
| Philadelphia to Comines | 3,683.33 mi (5,927.75 km) |
| Philadelphia to Compiegne | 3,709.35 mi (5,969.62 km) |
| Philadelphia to Concarneau | 3,457.37 mi (5,564.10 km) |
| Philadelphia to Conde-sur-l'Escaut | 3,714.93 mi (5,978.60 km) |
| Philadelphia to Conflans-Sainte-Honorine | 3,689.47 mi (5,937.63 km) |
| Philadelphia to Corbas | 3,901.19 mi (6,278.36 km) |
| Philadelphia to Corbeil-Essonnes | 3,715.55 mi (5,979.59 km) |
| Philadelphia to Cormeilles-en-Parisis | 3,694.46 mi (5,945.66 km) |
| Philadelphia to Cosne sur Loire | 3,766.28 mi (6,061.25 km) |
