North Charleston, SC to Duncan, SC is 201.1 miles and takes about 3h 50m via I 26 and Moore Duncan Highway, with a fuel budget near $33 and enough daylight to finish in a day. This trip stays within South Carolina, covering ground through the Southeast region. Given its mostly highway profile and manageable duration, it's a solid option for a single-day drive. You'll find it's a pretty straightforward route, ideal if you're looking for efficiency and minimal complexity.
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
100.5 miles from North Charleston, SC
A natural place for your longest stop of the day
, about 1h 51m into the drive
.
Main Roads
Road
Distance
Duration
I 26
186.8 mi
3h 24m
Moore Duncan Highway
6.2 mi
9m
East Main Street
5.8 mi
11m
Highway 221
0.9 mi
1m
Dorchester Road
0.6 mi
1m
Rivers Avenue
0.3 mi
<1m
South Spencer Street
<0.1 mi
<1m
Longest stretch:
I 26
— 186.8 mi, about 3h 24m
Traffic on I-26
Hour-of-day weekday pattern from 81 FHWA count stations on your route.
Peak
3 PM
~2,686 veh/hr typical
· worst 3,221
Quietest
2 AM
~209 veh/hr
Peak-to-quiet ratio
12.9×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between North Charleston, SC and Duncan, SC.
1
Start on US 52; US 78
0.3 mi·38 sec·Rivers Avenue
2
Turn left onto SC 642
0.6 mi·1 min·Dorchester Road
3
Take the ramp
0.2 mi·27 sec
Toward I 26 West: Columbia
4
Merge onto I 26
163 mi·2 hr 59 min·I 26
Use the straight / slight right lanes.
5
Keep slight right at fork onto I 26
24 mi·25 min·I 26
Toward SpartanburgUse the straight / slight left lanes.
6
Take the exit
0.2 mi·28 sec
Exit 28Toward US 221: Spartanburg-South, MooreUse the slight right lane.
7
Turn slight left
95 ft·2 sec
8
Turn left onto US 221
0.9 mi·1 min·Highway 221
9
Turn right onto SC 290
6.2 mi·9 min·Moore Duncan Highway
10
Continue on SC 290
5.8 mi·11 min·East Main Street
11
Turn left onto South Spencer Street
126 ft·3 sec·South Spencer Street
12
Arrive at destination
South Spencer Street
Trip Plan
For this 3h 50m drive, leaving early in the morning is a good idea to avoid peak traffic, especially around Charleston and Columbia. With only one recommended stop and a total distance of 201.1 miles, you have flexibility in how you pace yourself. The estimated fuel cost is around $33, so ensure your tank is full before departing North Charleston. Watch for the transition off I 26 onto local roads as you near Duncan; this is where you'll need to pay closer attention to navigation.
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 100.5 miles from North Charleston, SC, or about 1h 51m into the drive.
The longest continuous stretch on this route runs about 186.8 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 44 miles or 49m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 100.5 miles or 1h 51m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 1m
Traffic, exits, and arrival timing usually matter more near Duncan, SC than in the middle of the route.
Before You Leave
+
Open the route before leaving North Charleston, 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 North Charleston, SC
This is one driving day of about 201.1 miles and 3h 50m.
Your first comfortable stop window is around 44 miles from North Charleston, 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 186.8 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 7
5 decision points cluster between mile 0.3 and 187.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0.3 mi into trip|~0m in|SC 642 / Dorchester Road
Turn left onto SC 642 / Dorchester Road
Navigation decision point
4
0.9 mi into trip|~1m in
Take the ramp toward I 26 West: Columbia
Navigation decision point
Toward I 26 West: Columbia
5
1.1 mi into trip|~2m in|I 26
Merge onto I 26
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
164.4 mi into trip|~3h 1m in|I 26
Keep slight right at fork onto I 26 toward Spartanburg
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight left lanes.
Toward Spartanburg
8
187.9 mi into trip|~3h 26m in
Take the exit toward US 221: Spartanburg-South, Moore
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 28
Toward US 221: Spartanburg-South, Moore
Fuel & Cost
Regular Gas
$29.69 one way
$59.38 round trip
$3.75/gal25.4 MPG avg70 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.12
$32.63
$65.25
premium
$4.49
$35.56
$71.13
diesel
$4.80
$37.97
$75.94
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$30
Meals
$25–$50
Total
$55–$80
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 70.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $21 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
60.3
0
$21.12
$9.65
Efficient EV
50.3
0
$17.60
$8.04
EV Truck/SUV
80.4
1
$28.15
$12.87
Gas CO2
70 kg
EV CO2
24 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 Jul 19, 2026
Origin
North Charleston, SC
Late night
in North Charleston on Sunday
Local time
4:16 AM
EDT
Current temp
80°F
Mostly Clear
SW 8 to 12 mph5% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 18 at 11:05PM EDT by NWS Columbia SC
Beach Hazards Statement
Beach Hazards Statement issued July 18 at 8:04PM EDT until July 19 at 8:00PM EDT by NWS Wilmington NC
Destination
Duncan, SC
Late night
in Duncan on Sunday
Local time
4:16 AM
EDT
Current temp
73°F
Mostly Cloudy
WSW 2 mph11% chanceLive forecast
Special Weather Statement
Special Weather Statement issued July 18 at 11:05PM EDT by NWS Columbia SC
Beach Hazards Statement
Beach Hazards Statement issued July 18 at 8:04PM EDT until July 19 at 8:00PM EDT by NWS Wilmington NC
89°F
Rock Hill, SC
101 mi in
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
7 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
3h 50m 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...
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...
11 mi from route
~28 min detour
Free
near mile 83.2
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...
22 mi from route
~55 min detour
Free
near mile 194.1
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This trip is predominantly highway driving, with 93% of the route on faster roads. You'll spend the longest stretch, 186.8 miles, on I 26 before transitioning to surface roads. Expect a significant number of exits as you approach the greater Columbia area and continue towards Spartanburg County. The final leg on Moore Duncan Highway and East Main Street will be a change of pace from the interstate cruising.
93% highway — fuel and pacing are the main things to plan.
12 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 186.8 mi on I 26.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 26 and Moore Duncan Highway. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.3 miles in near SC 642 / Dorchester Road.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 3h 50m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.3 miles (SC 642 / Dorchester Road): Navigation decision point; at 0.9 miles: Navigation decision point; at 1.1 miles (I 26): Merge point - match speed before joining. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
854 ft19 ft
Total Climb
978 ft
Total Descent
143 ft
Highest Point
854 ft
~201.1 mi in
Elevation Range
835 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between North Charleston, SC and Duncan, SC, road signs point toward Spartanburg and Moore.
North Charleston is in the Greater Charleston area. It is the third largest city in South Carolina with a lot of muscle in terms of commerce and consumerism.
Top landmarks
•H. L. Hunley — submarine
•Charleston Naval Shipyard — former U.S. Navy ship building and repair facility located along the west bank o...
•Charleston Navy Yard Officers' Quarters Historic District — historic house in South Carolina, United States
The longest stretch is about 186.8 miles on I 26. The full list of main roads is in the Roads section above.
Yes — we found about 24 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: at 0.3 miles (SC 642 / Dorchester Road): Navigation decision point; at 0.9 miles: Navigation decision point; at 1.1 miles (I 26): Merge point - match speed before joining. Lane positioning matters here.
Yes — Fort Sumter and Fort Moultrie National Historical Park, Congaree National Park and Cowpens National Battlefield. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.8 hours each way, an in-and-out day trip would put you behind the wheel for 7.7 hours — manageable with a long break at Duncan, SC, but most travelers stay overnight.
