| Hackettstown to Chivasso | 3,999.12 mi (6,435.96 km) |
| Hackettstown to Ciampino | 4,320.21 mi (6,952.71 km) |
| Hackettstown to Cicciano | 4,435.69 mi (7,138.56 km) |
| Hackettstown to Cingoli | 4,290.58 mi (6,905.03 km) |
| Hackettstown to Cinisello Balsamo | 4,044.56 mi (6,509.09 km) |
| Hackettstown to Cinisi | 4,477.38 mi (7,205.65 km) |
| Hackettstown to Cirie | 3,985.32 mi (6,413.75 km) |
| Hackettstown to Ciro Marina | 4,610.89 mi (7,420.51 km) |
| Hackettstown to Cislago | 4,030.64 mi (6,486.70 km) |
| Hackettstown to Cisterna di Latina | 4,337.83 mi (6,981.06 km) |
| Hackettstown to Cisternino | 4,570.90 mi (7,356.15 km) |
| Hackettstown to Citta di Castello | 4,245.36 mi (6,832.25 km) |
| Hackettstown to Citta Sant'Angelo | 4,357.25 mi (7,012.32 km) |
| Hackettstown to Cittadella | 4,150.01 mi (6,678.80 km) |
| Hackettstown to Cittanova | 4,604.60 mi (7,410.39 km) |
