| Hackettstown to Cadillac (Michigan) | 587.31 mi (945.19 km) |
| Hackettstown to Caguas (Puerto Rico) | 1,647.65 mi (2,651.64 km) |
| Hackettstown to Cahokia (Illinois) | 830.13 mi (1,335.96 km) |
| Hackettstown to Calabasas (California) | 2,421.95 mi (3,897.75 km) |
| Hackettstown to Caldwell (Idaho) | 2,125.53 mi (3,420.71 km) |
| Hackettstown to Caledonia (Wisconsin) | 684.48 mi (1,101.56 km) |
| Hackettstown to Calera (Alabama) | 845.87 mi (1,361.30 km) |
| Hackettstown to Calexico (California) | 2,298.65 mi (3,699.32 km) |
| Hackettstown to Calhoun (Georgia) | 705.68 mi (1,135.68 km) |
| Hackettstown to California (Maryland) | 197.77 mi (318.28 km) |
| Hackettstown to California City (California) | 2,352.33 mi (3,785.70 km) |
| Hackettstown to Callaway (Florida) | 953.87 mi (1,535.11 km) |
| Hackettstown to Calumet City (Illinois) | 662.65 mi (1,066.44 km) |
| Hackettstown to Calverton (Maryland) | 167.46 mi (269.50 km) |
| Hackettstown to Camano (Washington) | 2,361.55 mi (3,800.55 km) |
