| Hilton Head Island to Cadillac (Michigan) | 870.50 mi (1,400.93 km) |
| Hilton Head Island to Caguas (Puerto Rico) | 1,329.62 mi (2,139.82 km) |
| Hilton Head Island to Cahokia (Illinois) | 689.40 mi (1,109.49 km) |
| Hilton Head Island to Calabasas (California) | 2,184.76 mi (3,516.04 km) |
| Hilton Head Island to Caldwell (Idaho) | 2,091.22 mi (3,365.50 km) |
| Hilton Head Island to Caledonia (Wisconsin) | 829.84 mi (1,335.50 km) |
| Hilton Head Island to Calera (Alabama) | 354.62 mi (570.71 km) |
| Hilton Head Island to Calexico (California) | 2,017.19 mi (3,246.35 km) |
| Hilton Head Island to Calhoun (Georgia) | 289.34 mi (465.64 km) |
| Hilton Head Island to California (Maryland) | 485.35 mi (781.10 km) |
| Hilton Head Island to California City (California) | 2,132.05 mi (3,431.21 km) |
| Hilton Head Island to Callaway (Florida) | 317.64 mi (511.19 km) |
| Hilton Head Island to Calumet City (Illinois) | 751.15 mi (1,208.86 km) |
| Hilton Head Island to Calverton (Maryland) | 520.22 mi (837.21 km) |
| Hilton Head Island to Camano (Washington) | 2,424.93 mi (3,902.54 km) |
