How far is Charleston, SC from Duncan, SC?
The driving distance from Charleston, SC to Duncan, SC is about 207.5 miles (333.9 km), with a travel time of about 03h 59m by car.
- The straight-line flight distance is about 196 miles (315.5 km).
- For a round trip, plan for roughly 07h 59m 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 03h 59m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Town in South Carolina
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Charleston and Duncan.
Turn-by-Turn Driving Directions
Step-by-step road directions between Charleston and Duncan.
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1
Start on Broad Street
12 m · 5 sec · Broad Street
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2
Turn right onto Meeting Street
1.2 km · 2 min · Meeting Street
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3
Turn left onto Calhoun Street
689 ft · 15 sec · Calhoun Street
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4
Turn right onto King Street
3052 ft · 1 min · King Street
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5
Turn left onto Spring Street
853 ft · 30 sec · Spring Street
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6
Turn right onto Coming Street
1144 ft · 31 sec · Coming Street
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7
Turn right onto Septima Clark Expressway
3078 ft · 1 min · Septima Clark Expressway
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8
Keep slight left
168.4 mi · 3 hr 6 min
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9
Keep slight right to continue on Spartanburg
23.5 mi · 25 min
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10
Take the exit slight right toward US 221: Spartanburg-South, Moore
1139 ft · 28 sec
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11
Turn slight left
29 m · 2 sec
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12
Turn left onto Highway 221
1.5 km · 2 min · Highway 221
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13
Turn right onto Moore Duncan Highway
6.2 mi · 10 min · Moore Duncan Highway
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14
Continue on East Main Street
5.8 mi · 12 min · East Main Street
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15
Turn left onto South Spencer Street
39 m · 3 sec · South Spencer Street
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16
Arrive at your destination
0 m · 1 sec · South Spencer Street
Car Route Details
A richer read on the saved driving route between Charleston and Duncan.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Septima Clark Expressway
Keep slight left
168 mi · 03h 06m
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 Charleston and Sunny near Duncan.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Charleston to Duncan?
The road trip is about 207.5 miles (333.9 km) and usually takes 03h 59m 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?
Pineridge is a useful midpoint, sitting about 103.8 miles from Charleston and 103.7 miles from Duncan.
How much longer is the road route than the straight-line distance?
The direct path is about 196 miles (315.5 km), while the road route adds roughly 11.5 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 9:00 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.99 one way or $57.99 round trip. Estimated CO2 is about 65.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Charleston and Sunny near Duncan.
Stop Ideas Near Pineridge
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 Pineridge.
Columbia
Camden
Denmark
Flight Path Map
This map shows the direct air route between Charleston and Duncan. Straight-line distance: 196.05 mi (315.51 km).
#1 Charleston
The most populous city in South Carolina.
| Population | 139,714 |
| Coordinates | 32.7765700, -79.9309200 |
| Altitude | 6 |
| Country | United States |
#2 Duncan
Human settlement in Spartanburg County, South Carolina, United States of America
| Population | 3,715 |
| Coordinates | 34.9379000, -82.1451100 |
| Altitude | 264 |
| Country | United States |
End: Duncan (-82.14511, 34.9379)
Estimated Travel Time
Distance: 334 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 54m |
| 40 mph (64.37 km/h) | 05h 11m |
| 50 mph (80.47 km/h) | 04h 08m |
| 60 mph (96.56 km/h) | 03h 27m |
| 70 mph (112.65 km/h) | 02h 57m |
| 80 mph (129 km/h) | 02h 35m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $28.99 | $57.99 |
| Mid-grade | $4.43 | $32.42 | $64.84 |
| Premium | $4.78 | $34.97 | $69.95 |
| Diesel | $5.62 | $41.17 | $82.34 |
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 · May 04, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.