| Allentown to Cognac | 3,662.81 mi (5,894.72 km) |
| Allentown to Cogolin | 4,040.56 mi (6,502.65 km) |
| Allentown to Colmar | 3,924.77 mi (6,316.31 km) |
| Allentown to Colombes | 3,687.80 mi (5,934.95 km) |
| Allentown to Colomiers | 3,796.70 mi (6,110.20 km) |
| Allentown to Combs-la-Ville | 3,707.47 mi (5,966.59 km) |
| Allentown to Comines | 3,671.48 mi (5,908.68 km) |
| Allentown to Compiegne | 3,698.71 mi (5,952.50 km) |
| Allentown to Concarneau | 3,449.64 mi (5,551.65 km) |
| Allentown to Conde-sur-l'Escaut | 3,703.22 mi (5,959.76 km) |
| Allentown to Conflans-Sainte-Honorine | 3,679.36 mi (5,921.36 km) |
| Allentown to Corbas | 3,893.21 mi (6,265.51 km) |
| Allentown to Corbeil-Essonnes | 3,705.68 mi (5,963.72 km) |
| Allentown to Cormeilles-en-Parisis | 3,684.35 mi (5,929.39 km) |
| Allentown to Cosne sur Loire | 3,757.35 mi (6,046.87 km) |
