The drive from Mount Pleasant, SC to Buffalo, SC covers 188.4 miles and takes about 3h 39m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 26, Whitmire Highway, State Highway 121 for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 138.9 miles on I 26.
At current regular gas prices, budget about $29.46 one way before food or hotel costs.
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
94.2 miles from Mount Pleasant, SC
A natural place for your longest stop of the day
, about 1h 47m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 39m. Total distance: 188.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 39m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (88%). Some complex stretches to watch for.
Drive Character
This is a 3h 39m highway drive covering 188.4 miles, with most of the trip on I 26 and Whitmire Highway. The longest continuous stretch is about 138.9 miles on I 26.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 20 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 26 is the longest continuous segment at about 138.9 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 26 and Whitmire Highway. You will hit about 12 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near SC 703 / Coleman Boulevard.
Driving Effort5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 188.4 miles you will encounter 12 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: near the start (SC 703 / Coleman Boulevard): Navigation decision point; at 1.4 miles (I 526 / Mark Clark Expressway): Lane positioning matters here; at 13.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 12 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
5
0 mi into trip|~0m in|SC 703 / Coleman Boulevard
Turn right onto SC 703 / Coleman Boulevard
Navigation decision point
4
1.4 mi into trip|~2m in|I 526 / Mark Clark Expressway
Turn straight onto I 526 / Mark Clark Expressway toward North Charleston
Lane positioning matters here
Use the straight / slight right lanes.
Toward North Charleston
8
13.3 mi into trip|~17m in
Take the exit toward US 52 West, US 78 West: Rivers Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 18B
Toward US 52 West, US 78 West: Rivers Avenue
5
15.3 mi into trip|~20m in|I 26
Merge onto I 26
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
5
154.2 mi into trip|~2h 52m in
Take the exit toward SC 121: Whitmire, Union
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward SC 121: Whitmire, Union
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Mount Pleasant, SC to Buffalo, SC, road signs begin pointing toward Union along the way.
Union
154.2 mi in|~2h 52m
Main Roads
Road
Distance
Duration
I 26
138.9 mi
2h 32m
Whitmire Highway
13.6 mi
15m
State Highway 121
13.3 mi
19m
Mark Clark Expressway
12 mi
14m
Main Street
1.9 mi
3m
South Pinckney Street
1.5 mi
2m
US 176
1.5 mi
1m
Chuck Dawley Boulevard
1.3 mi
2m
Longest stretch:
I 26
— 138.9 mi, about 2h 32m
Turn-by-Turn Driving Directions
Step-by-step road directions between Mount Pleasant, SC and Buffalo, SC.
1
Start on this road
76 ft·10 sec·this road
2
Turn right onto SC 703
237 ft·9 sec·Coleman Boulevard
3
Turn left onto I 526 Bus
1.3 mi·2 min·Chuck Dawley Boulevard
4
Turn straight onto I 526
12 mi·14 min·Mark Clark Expressway
Toward North CharlestonUse the straight / slight right lanes.
5
Take the exit
0.2 mi·31 sec
Exit 18BToward US 52 West, US 78 West: Rivers AvenueUse the slight right lane.
6
Turn slight right onto US 52; US 78
1.1 mi·1 min·Rivers Avenue
Use the straight lane.
7
Turn straight
0.1 mi·20 sec
8
Take the ramp
0.5 mi·45 sec
Toward I 26 North: Columbia
9
Merge onto I 26
139 mi·2 hr 32 min·I 26
Use the straight / slight right lanes.
10
Take the exit
0.3 mi·36 sec
Toward SC 121: Whitmire, Union
11
Turn right onto SC 121
13 mi·19 min·State Highway 121
12
Merge onto US 176; SC 72; SC 121
1.5 mi·1 min·US 176; SC 72; SC 121
13
Keep slight left at fork
0.1 mi·7 sec
14
Merge onto US 176
14 mi·15 min·Whitmire Highway
15
Continue on SC 18
1.5 mi·2 min·South Pinckney Street
16
Turn slight left onto SC 18
0.9 mi·1 min·Thompson Boulevard
17
Turn slight left onto SC 215
0.4 mi·45 sec·Harwood Heights
18
Continue on SC 215
0.7 mi·1 min·Buffalo-West Springs Highway
19
Continue on SC 215
1.9 mi·3 min·Main Street
20
Arrive at destination
SC 215
Trip Plan
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 94.2 miles from Mount Pleasant, SC, or about 1h 47m into the drive.
The longest continuous stretch on this route runs about 138.9 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 41 miles or 48m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 94.2 miles or 1h 47m 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 53m
Traffic, exits, and arrival timing usually matter more near Buffalo, SC than in the middle of the route.
Before You Leave
+
Open the route before leaving Mount Pleasant, 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 Mount Pleasant, SC
This is one driving day of about 188.4 miles and 3h 39m.
Your first comfortable stop window is around 41 miles from Mount Pleasant, 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 I 26 for about 138.9 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 94.2 mi from Mount Pleasant, SC
· 1h 47m into the drive
Place data sourced from public business listings. Hours and availability may vary.
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...
Astonishing biodiversity exists in Congaree National Park, the largest intact expanse of old growth bottomland hardwood forest remaining in the southeastern United States. Waters from the Congaree and...
A pasturing area at the time of the battle, this Revolutionary War site commemorates the place where Daniel Morgan and his army turned the flanks of Banastre Tarleton's British army. This classic mili...
29 mi from route
~72 min detour
Free
near mile 188.4
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$29.46 one way
$58.92 round trip
$3.97/gal25.4 MPG avg66 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.34
$32.21
$64.43
premium
$4.70
$34.87
$69.74
diesel
$5.61
$41.60
$83.19
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$29
Meals
$25–$50
Total
$54–$79
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 65.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $20 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
56.5
0
$19.78
$9.04
Efficient EV
47.1
0
$16.49
$7.54
EV Truck/SUV
75.4
0
$26.38
$12.06
Gas CO2
66 kg
EV CO2
22 kg (67% 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 15, 2026
Origin
Mount Pleasant, SC
Late night
in Mount Pleasant on Friday
Local time
4:20 AM
EDT
Current temp
59°F
Unavailable
Live forecast
Destination
Buffalo, SC
Late night
in Buffalo on Friday
Local time
4:20 AM
EDT
Current temp
87°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
28 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 39m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Mount Pleasant, SC to Buffalo, SC covers 188.4 miles and takes about 3h 39m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 26, Whitmire Highway, State Highway 121. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 94.2 miles from Mount Pleasant, SC. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $29.46 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This drive requires moderate attention. Across 188.4 miles you will encounter 12 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
The main spots that need attention: near the start (SC 703 / Coleman Boulevard): Navigation decision point; at 1.4 miles (I 526 / Mark Clark Expressway): Lane positioning matters here; at 13.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from Mount Pleasant, SC to Buffalo, SC, road signs begin pointing toward Union along the way.
Yes. Nearby national parks include Fort Sumter and Fort Moultrie National Historical Park, Congaree National Park and Cowpens National Battlefield.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from
OSRM
over
OpenStreetMap.
Fuel cost uses
EIA
weekly regional averages.
National park proximity is from the
NPS API.
Pages are published only after passing our data-quality checks; our
methodology page
documents refresh cadence, editorial standards, and known limitations.
