| Hackettstown to Cernavoda | 4,858.63 mi (7,819.22 km) |
| Hackettstown to Chitila | 4,771.50 mi (7,678.98 km) |
| Hackettstown to Cisnadie | 4,650.20 mi (7,483.77 km) |
| Hackettstown to Cluj-Napoca | 4,585.77 mi (7,380.09 km) |
| Hackettstown to Codlea | 4,701.15 mi (7,565.77 km) |
| Hackettstown to Comanesti | 4,709.45 mi (7,579.13 km) |
| Hackettstown to Comarnic | 4,727.01 mi (7,607.39 km) |
| Hackettstown to Constanta | 4,889.21 mi (7,868.43 km) |
| Hackettstown to Corabia | 4,743.52 mi (7,633.96 km) |
| Hackettstown to Costesti | 4,721.48 mi (7,598.48 km) |
| Hackettstown to Covasna | 4,723.45 mi (7,601.66 km) |
| Hackettstown to Craiova | 4,693.12 mi (7,552.84 km) |
| Hackettstown to Cristuru Secuiesc | 4,660.97 mi (7,501.10 km) |
| Hackettstown to Cugir | 4,614.12 mi (7,425.70 km) |
| Hackettstown to Cumpana | 4,888.55 mi (7,867.36 km) |
