| Hackettstown to Cognac | 3,624.51 mi (5,833.09 km) |
| Hackettstown to Cogolin | 4,002.26 mi (6,441.01 km) |
| Hackettstown to Colmar | 3,886.92 mi (6,255.39 km) |
| Hackettstown to Colombes | 3,649.87 mi (5,873.90 km) |
| Hackettstown to Colomiers | 3,758.33 mi (6,048.45 km) |
| Hackettstown to Combs-la-Ville | 3,669.51 mi (5,905.51 km) |
| Hackettstown to Comines | 3,633.83 mi (5,848.08 km) |
| Hackettstown to Compiegne | 3,660.86 mi (5,891.59 km) |
| Hackettstown to Concarneau | 3,411.43 mi (5,490.16 km) |
| Hackettstown to Conde-sur-l'Escaut | 3,665.55 mi (5,899.13 km) |
| Hackettstown to Conflans-Sainte-Honorine | 3,641.43 mi (5,860.32 km) |
| Hackettstown to Corbas | 3,855.03 mi (6,204.06 km) |
| Hackettstown to Corbeil-Essonnes | 3,667.72 mi (5,902.62 km) |
| Hackettstown to Cormeilles-en-Parisis | 3,646.42 mi (5,868.35 km) |
| Hackettstown to Cosne sur Loire | 3,719.27 mi (5,985.59 km) |
