This 108.5-mile drive from Hilton Head Island, SC to Mount Pleasant, SC is a straightforward trip that can easily be completed in about 2 hours and 31 minutes, making it ideal for a single day. With 72% of the route on highways, you'll find it's a highway-focused journey. The estimated fuel cost is around $17, and you'll encounter one designated stop. This drive is entirely within the Southeast region, connecting two points in South Carolina. It's a practical option if you're looking for an efficient way to travel between these two locations without needing an overnight stay.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
54.3 miles from Hilton Head Island, SC
A natural place for your longest stop of the day
, about 1h 12m into the drive
.
Main Roads
Road
Distance
Duration
US 17
55.6 mi
1h 17m
Okatie Highway
12.2 mi
13m
Trask Parkway
11.6 mi
14m
Fording Island Road
9 mi
13m
William Hilton Parkway
3.9 mi
4m
Robert Smalls Parkway
3.5 mi
3m
Cross Island Parkway
2.3 mi
2m
West Coleman Boulevard
2.2 mi
4m
Longest stretch:
US 17
— 55.6 mi, about 1h 17m
Turn-by-Turn Driving Directions
Step-by-step road directions between Hilton Head Island, SC and Mount Pleasant, SC.
1
Start on Allen Road
0.2 mi·41 sec·Allen Road
2
Turn left onto Marshland Road
2.2 mi·5 min·Marshland Road
3
Take the ramp
0.4 mi·53 sec
4
Merge onto US 278
2.3 mi·2 min·Cross Island Parkway
5
Merge onto US 278
3.9 mi·4 min·William Hilton Parkway
6
Continue on US 278
9.0 mi·13 min·Fording Island Road
7
Take the exit
0.3 mi·39 sec
8
Keep slight right at fork
147 ft·4 sec
9
Merge onto SC 170
12 mi·13 min·Okatie Highway
10
Continue on SC 170
1.7 mi·1 min·Edward Burton Rodgers Bridge
11
Continue on SC 170
3.5 mi·3 min·Robert Smalls Parkway
12
Turn slight left onto US 21
1.2 mi·1 min·Parris Island Gateway
13
At end of road, turn left onto US 21
12 mi·14 min·Trask Parkway
14
Take the exit
0.5 mi·1 min
15
Merge onto US 17
53 mi·1 hr 14 min·US 17
Use the straight / right lanes.
16
Turn straight onto US 17
0.2 mi·28 sec·Septima P. Clark Parkway
17
Continue on US 17
0.5 mi·1 min·Crosstown
18
Continue on US 17
0.6 mi·1 min·Septima Clark Expressway
19
Keep slight right at fork onto US 17
2.6 mi·3 min·US 17
Toward US 17 North: Mount Pleasant, GeorgetownUse the straight / slight right lanes.
20
Take the exit
0.5 mi·1 min
Toward SC 703: Coleman Boulevard, Sullivans IslandUse the slight right lane.
21
Continue on SC 703
2.2 mi·4 min·West Coleman Boulevard
22
Turn right
76 ft·5 sec
23
Arrive at destination
Trip Plan
Given the relatively short duration of 2 hours and 31 minutes for this 108.5-mile drive, you have plenty of flexibility. Consider an early morning departure to maximize your day, especially since the longest stretch on US 17 is over 55 miles, meaning fewer opportunities for spontaneous stops. With a fuel cost estimated at $17, keeping your tank topped off is a good idea, though you won't need extensive fueling. Plan for your single stop to be a brief rest break rather than a lengthy exploration, allowing you to reach Mount Pleasant without feeling rushed.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 54.3 miles from Hilton Head Island, SC, or about 1h 12m into the drive.
The longest continuous stretch on this route runs about 55.6 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 24 miles or 34m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 54.3 miles or 1h 12m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h
Traffic, exits, and arrival timing usually matter more near Mount Pleasant, SC than in the middle of the route.
Before You Leave
+
Open the route before leaving Hilton Head Island, SC so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Hilton Head Island, SC
This is one driving day of about 108.5 miles and 2h 31m.
Your first comfortable stop window is around 24 miles from Hilton Head Island, SC.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on US 17 for about 55.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 13
5 decision points cluster between mile 2.4 and 105.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
2.4 mi into trip|~6m in
Take the ramp
Navigation decision point
5
18.2 mi into trip|~27m in
Keep slight right at fork
Highway fork - watch signs carefully
5
48.9 mi into trip|~1h 4m in|US 17
Merge onto US 17
Merge point - match speed before joining. Lane positioning matters here
Use the straight / right lanes.
8
103.2 mi into trip|~2h 21m in|US 17
Keep slight right at fork onto US 17 toward US 17 North: Mount Pleasant, Georgetown
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward US 17 North: Mount Pleasant, Georgetown
7
105.8 mi into trip|~2h 25m in
Take the exit toward SC 703: Coleman Boulevard, Sullivans Island
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward SC 703: Coleman Boulevard, Sullivans Isl...
Fuel & Cost
Regular Gas
$16.97 one way
$33.93 round trip
$3.97/gal25.4 MPG avg38 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.34
$18.55
$37.10
premium
$4.70
$20.08
$40.16
diesel
$5.61
$23.96
$47.91
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$17
Meals
$25–$50
Total
$42–$67
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 38 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
32.6
0
$11.39
$5.21
Efficient EV
27.1
0
$9.49
$4.34
EV Truck/SUV
43.4
0
$15.19
$6.94
Gas CO2
38 kg
EV CO2
13 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 16, 2026
Origin
Hilton Head Island, SC
Late night
in Hilton Head Island on Sunday
Local time
12:42 AM
EDT
Current temp
80°F
Sunny
S 10 mph0% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued April 16 at 2:47AM EDT until April 16 at 8:00PM EDT by NWS Wilmington NC
Destination
Mount Pleasant, SC
Late night
in Mount Pleasant on Sunday
Local time
12:42 AM
EDT
Current temp
59°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
21 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
2h 31m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Fort Sumter and Fort Moultrie National Historical Park
National Historical Park
Two forts stand at the entrance of Charleston Harbor. Patriots inside a palmetto log fort, later named Fort Moultrie, defeated the Royal Navy in 1776. As Charleston blazed a path towards secession to...
The Reconstruction era,1861-1900 the historic period in which the United States grappled with the question of how to integrate millions of newly freed African Americans into social, political, economi...
6 mi from route
~15 min detour
Free
near mile 37.4
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a highway-focused experience for most of this 108.5-mile trip, with 72% of the drive utilizing faster roads. You'll primarily be on US 17 and Okatie Highway, with Trask Parkway also part of the main thoroughfares. The longest uninterrupted stretch you'll encounter is a solid 55.6 miles on US 17, offering a good opportunity to settle into a rhythm. The character of the road is largely consistent, emphasizing forward momentum and efficient travel.
72% highway — fuel and pacing are the main things to plan.
23 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 55.6 mi on US 17.
How Hard Is This Drive?
9/10
This is a straightforward highway drive that stays mostly on US 17 and Okatie Highway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 2.4 miles in.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 108.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 2.4 miles: Navigation decision point; at 18.2 miles: Highway fork - watch signs carefully; at 48.9 miles (US 17): Merge point - match speed before joining. Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 31m. Total distance: 108.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 31m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (72%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 55.6 miles on US 17. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Mount Pleasant, SC before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 2.4 miles: Navigation decision point; at 18.2 miles: Highway fork - watch signs carefully; at 48.9 miles (US 17): Merge point - match speed before joining. Lane positioning matters here.
Yes — Fort Sumter and Fort Moultrie National Historical Park and Reconstruction Era National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Mount Pleasant, SC before heading back.
