How far is Duncan, SC from Sumter, SC?
The driving distance from Duncan, SC to Sumter, SC is about 149.3 miles (240.3 km), with a travel time of about 02h 35m by car.
- The straight-line flight distance is about 124.5 miles (200.4 km).
- For a round trip, plan for roughly 05h 10m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM EDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 35m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
City in Newberry County, South Carolina, United States of America
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 Duncan and Sumter.
Turn-by-Turn Driving Directions
Step-by-step road directions between Duncan and Sumter.
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1
Start on South Spencer Street
39 m · 7 sec · South Spencer Street
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2
Turn right onto West Main Street
5.8 mi · 12 min · West Main Street
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3
Continue on Moore Duncan Highway
6.2 mi · 10 min · Moore Duncan Highway
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4
Turn left onto Highway 221
1.3 km · 1 min · Highway 221
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5
Take the ramp right
797 ft · 19 sec
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6
Merge slight left
79.4 mi · 1 hr 27 min
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7
Keep slight left to continue on I 126, US 76: Columbia
3.4 mi · 4 min
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8
Take the exit slight right toward Huger Street
1161 ft · 28 sec
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9
Continue on Huger Street
1.2 km · 2 min · Huger Street
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10
Turn left onto Gervais Street
1.9 mi · 4 min · Gervais Street
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11
Turn right onto Millwood Avenue
1.4 mi · 3 min · Millwood Avenue
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12
Continue on Devine Street
1.3 mi · 3 min · Devine Street
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13
Continue on Garners Ferry Road
36.2 mi · 46 min · Garners Ferry Road
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14
Keep slight right to continue on Broad Street
3.2 mi · 5 min · Broad Street
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15
Continue on North Washington Street
2266 ft · 49 sec · North Washington Street
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16
Turn left onto West Liberty Street
966 ft · 20 sec · West Liberty Street
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17
Arrive at your destination
0 m · 1 sec · East Liberty Street
Car Route Details
A richer read on the saved driving route between Duncan and Sumter.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Highway 221
Merge slight left
79.4 mi · 01h 27m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Duncan and Sunny near Sumter.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Duncan to Sumter?
The road trip is about 149.3 miles (240.3 km) and usually takes 02h 35m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Little Mountain is a useful midpoint, sitting about 70.6 miles from Duncan and 78.7 miles from Sumter.
How much longer is the road route than the straight-line distance?
The direct path is about 124.5 miles (200.4 km), while the road route adds roughly 24.8 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 8:00 AM to 10:00 AM EDT. If you want a more comfortable same-day return, try to leave by 1:20 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.87 one way or $41.75 round trip. Estimated CO2 is about 46.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Duncan and Sunny near Sumter.
Stop Ideas Near Little Mountain
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 Little Mountain.
Columbia
Camden
Spartanburg
Denmark
Flight Path Map
This map shows the direct air route between Duncan and Sumter. Straight-line distance: 124.53 mi (200.41 km).
#1 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 |
#2 Sumter
City in and county seat of Sumter County, South Carolina, United States
| Population | 39,439 |
| Coordinates | 33.9204400, -80.3414700 |
| Altitude | 52 |
| Country | United States |
End: East Liberty Street (-80.341474, 33.920409)
Estimated Travel Time
Distance: 240 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 58m |
| 40 mph (64.37 km/h) | 03h 43m |
| 50 mph (80.47 km/h) | 02h 59m |
| 60 mph (96.56 km/h) | 02h 29m |
| 70 mph (112.65 km/h) | 02h 07m |
| 80 mph (129 km/h) | 01h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $20.87 | $41.75 |
| Mid-grade | $4.43 | $23.34 | $46.68 |
| Premium | $4.78 | $25.18 | $50.36 |
| Diesel | $5.62 | $29.64 | $59.28 |
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.