The journey from Hilton Head Island to San Francisco covers approximately 3000 miles. You will primarily use I-80 to reach the city. The drive typically takes 45 hours. You will pass through major cities like Nashville, St. Louis, Omaha, and Salt Lake City. The route is well-serviced with gas stations and restaurants. It is a long but common route for those traveling to the West Coast.
Total Distance: 4828 km driving distance; 4100 km straight-line air distance.
Traffic around San Francisco can be heavy; plan accordingly.
Spring and fall offer the best weather for exploring the city.