| Hilton Head Island to Ukiah (California) | 2,408.87 mi (3,876.71 km) |
| Hilton Head Island to Union (Missouri) | 720.32 mi (1,159.24 km) |
| Hilton Head Island to Union City (California) | 2,349.34 mi (3,780.90 km) |
| Hilton Head Island to Union City (Georgia) | 241.55 mi (388.74 km) |
| Hilton Head Island to Union City (New Jersey) | 699.86 mi (1,126.31 km) |
| Hilton Head Island to Union City (Tennessee) | 556.41 mi (895.46 km) |
| Hilton Head Island to Union Hill-Novelty Hill (Washington) | 2,397.89 mi (3,859.03 km) |
| Hilton Head Island to Union Park (Florida) | 252.05 mi (405.64 km) |
| Hilton Head Island to Uniondale (New York) | 710.26 mi (1,143.05 km) |
| Hilton Head Island to Universal City (Texas) | 1,055.82 mi (1,699.17 km) |
| Hilton Head Island to University (Florida) | 301.42 mi (485.08 km) |
| Hilton Head Island to University City (Missouri) | 700.15 mi (1,126.79 km) |
| Hilton Head Island to University Heights (Ohio) | 644.38 mi (1,037.03 km) |
| Hilton Head Island to University of California-Santa Barbara (California) | 2,249.61 mi (3,620.40 km) |
| Hilton Head Island to University Park (Texas) | 934.92 mi (1,504.61 km) |
