| Hackettstown to Castrovillari | 4,552.67 mi (7,326.81 km) |
| Hackettstown to Catania | 4,593.23 mi (7,392.09 km) |
| Hackettstown to Catanzaro | 4,606.02 mi (7,412.67 km) |
| Hackettstown to Cattolica | 4,248.55 mi (6,837.38 km) |
| Hackettstown to Cava de' Tirreni | 4,453.03 mi (7,166.46 km) |
| Hackettstown to Cavallino | 4,620.39 mi (7,435.80 km) |
| Hackettstown to Cavarzere | 4,180.10 mi (6,727.23 km) |
| Hackettstown to Cave | 4,334.21 mi (6,975.24 km) |
| Hackettstown to Cavriago | 4,129.05 mi (6,645.07 km) |
| Hackettstown to Cavriglia | 4,210.55 mi (6,776.22 km) |
| Hackettstown to Cazzago San Martino | 4,077.97 mi (6,562.86 km) |
| Hackettstown to Ceccano | 4,360.86 mi (7,018.13 km) |
| Hackettstown to Cecina | 4,175.51 mi (6,719.83 km) |
| Hackettstown to Cefalu | 4,524.01 mi (7,280.70 km) |
| Hackettstown to Ceglie Messapico | 4,577.03 mi (7,366.02 km) |
