| Hackettstown to Conyers (Georgia) | 707.09 mi (1,137.95 km) |
| Hackettstown to Cookeville (Tennessee) | 662.28 mi (1,065.84 km) |
| Hackettstown to Coolidge (Arizona) | 2,083.79 mi (3,353.53 km) |
| Hackettstown to Coon Rapids (Minnesota) | 977.80 mi (1,573.61 km) |
| Hackettstown to Cooper City (Florida) | 1,069.84 mi (1,721.74 km) |
| Hackettstown to Coos Bay (Oregon) | 2,501.00 mi (4,024.97 km) |
| Hackettstown to Copiague (New York) | 76.08 mi (122.44 km) |
| Hackettstown to Coppell (Texas) | 1,335.45 mi (2,149.20 km) |
| Hackettstown to Copperas Cove (Texas) | 1,449.25 mi (2,332.35 km) |
| Hackettstown to Coral Gables (Florida) | 1,092.41 mi (1,758.06 km) |
| Hackettstown to Coral Springs (Florida) | 1,054.49 mi (1,697.04 km) |
| Hackettstown to Coral Terrace (Florida) | 1,090.11 mi (1,754.37 km) |
| Hackettstown to Coralville (Iowa) | 871.42 mi (1,402.42 km) |
| Hackettstown to Coram (New York) | 95.10 mi (153.05 km) |
| Hackettstown to Corcoran (California) | 2,415.93 mi (3,888.07 km) |
