How far is Hilton Head Island, SC from Union, SC?
The driving distance from Hilton Head Island, SC to Union, SC is about 215.1 miles (346.2 km), with a travel time of about 04h 21m by car.
- The straight-line flight distance is about 174.4 miles (280.6 km).
- For a round trip, plan for roughly 08h 42m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 04h 21m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Orangeburg County, South Carolina, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Hilton Head Island and Union.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hilton Head Island and Union.
-
1
Start on Allen Road
887 ft · 42 sec · Allen Road
-
2
Turn left onto Marshland Road
2.2 mi · 5 min · Marshland Road
-
3
Take the ramp right
2176 ft · 53 sec
-
4
Merge slight left onto Cross Island Parkway
2.3 mi · 2 min · Cross Island Parkway
-
5
Merge slight left onto William Hilton Parkway
3.9 mi · 4 min · William Hilton Parkway
-
6
Continue on Fording Island Road
9 mi · 13 min · Fording Island Road
-
7
Take the exit slight right
1444 ft · 40 sec
-
8
Keep slight right
45 m · 4 sec
-
9
Merge slight left onto Okatie Highway
3.9 mi · 5 min · Okatie Highway
-
10
Take the exit slight left
149 m · 14 sec
-
11
Continue on Lowcountry Drive
7.9 mi · 11 min · Lowcountry Drive
-
12
Continue on Coosaw Scenic Drive
9.4 mi · 13 min · Coosaw Scenic Drive
-
13
Take the ramp slight right toward I 95 North, US 17 North: Florence
1435 ft · 35 sec
-
14
Merge slight left
93.1 mi · 1 hr 40 min
-
15
Take the exit slight right toward US 521: Alcolu, Sumter
1660 ft · 41 sec
-
16
Keep slight left to continue on US 521 North: Alcolu, Sumter
88 m · 7 sec
-
17
Turn left
12.4 mi · 14 min
-
18
Turn left onto South Guignard Parkway
1.1 mi · 1 min · South Guignard Parkway
-
19
Continue on South Guignard Drive
3.6 mi · 4 min · South Guignard Drive
-
20
Continue on Bultman Drive
1.1 km · 2 min · Bultman Drive
-
21
Turn left onto Broad Street
1.3 km · 1 min · Broad Street
-
22
Turn slight right onto Camden Highway
1.9 mi · 2 min · Camden Highway
-
23
Continue on Thomas Sumter Highway
7.6 mi · 9 min · Thomas Sumter Highway
-
24
Continue on Camden Highway
6.2 mi · 7 min · Camden Highway
-
25
Continue on Sumter Highway
8.4 mi · 10 min · Sumter Highway
-
26
Continue on Broad Street
4.2 mi · 9 min · Broad Street
-
27
Continue on Kershaw Highway
14.4 mi · 16 min · Kershaw Highway
-
28
Continue on Kershaw Camden Highway
2.7 mi · 3 min · Kershaw Camden Highway
-
29
Continue on South Hampton Street
1.1 km · 48 sec · South Hampton Street
-
30
Turn left onto South Matson Street
1.5 mi · 2 min · South Matson Street
-
31
At the end of the road, turn left onto Kershaw Camden Highway
4.8 mi · 5 min · Kershaw Camden Highway
-
32
Continue on Spring Street
1.3 km · 56 sec · Spring Street
-
33
Turn right onto Main Street
1.5 km · 1 min · Main Street
-
34
Continue on Kershaw Camden Highway
1.4 mi · 2 min · Kershaw Camden Highway
-
35
Turn slight right onto Rocky River Road
7.7 mi · 14 min · Rocky River Road
-
36
Enter the roundabout and take exit 3 toward the route
60 m · 3 sec
-
37
Exit the roundabout
8 m · 1 sec
-
38
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Hilton Head Island and Union.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 95 North
Merge slight left
93.1 mi · 01h 40m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Hilton Head Island and Sunny near Union.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Hilton Head Island to Union?
The road trip is about 215.1 miles (346.2 km) and usually takes 04h 21m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Santee is a useful midpoint, sitting about 107.7 miles from Hilton Head Island and 107.4 miles from Union.
How much longer is the road route than the straight-line distance?
The direct path is about 174.4 miles (280.6 km), while the road route adds roughly 40.7 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 8:18 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.06 one way or $60.13 round trip. Estimated CO2 is about 67.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Hilton Head Island and Sunny near Union.
Stop Ideas Near Santee
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Santee.
Denmark
Kingstree
Columbia
Charleston, South Carolina
Flight Path Map
This map shows the direct air route between Hilton Head Island and Union. Straight-line distance: 174.38 mi (280.63 km).
#1 Hilton Head Island
Resort town in South Carolina, USA
| Population | 39,619 |
| Coordinates | 32.1938200, -80.7381600 |
| Altitude | 3 |
| Country | United States |
#2 Union
County seat of Union County, South Carolina
| Population | 7,535 |
| Coordinates | 34.7157100, -80.6211800 |
| Altitude | 195 |
| Country | United States |
End: Union (-80.62118, 34.71571)
Estimated Travel Time
Distance: 346 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 10m |
| 40 mph (64.37 km/h) | 05h 22m |
| 50 mph (80.47 km/h) | 04h 18m |
| 60 mph (96.56 km/h) | 03h 35m |
| 70 mph (112.65 km/h) | 03h 04m |
| 80 mph (129 km/h) | 02h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $30.06 | $60.13 |
| Mid-grade | $4.43 | $33.62 | $67.23 |
| Premium | $4.78 | $36.27 | $72.53 |
| Diesel | $5.62 | $42.69 | $85.37 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in South Carolina · Apr 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.