How far is Summerville, SC from Union, SC?
The driving distance from Summerville, SC to Union, SC is about 150.9 miles (242.8 km), with a travel time of about 03h 00m by car.
- The straight-line flight distance is about 120 miles (193.2 km).
- For a round trip, plan for roughly 06h 01m 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 00m.
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.
Human settlement in Clarendon 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 Summerville and Union.
Turn-by-Turn Driving Directions
Step-by-step road directions between Summerville and Union.
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1
Start on the route
28 m · 12 sec
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2
Turn left onto East Richardson Avenue
35 m · 7 sec · East Richardson Avenue
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3
Turn right onto North Main Street
2.2 mi · 4 min · North Main Street
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4
Take the ramp slight left toward I-26 West
2191 ft · 56 sec
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5
Merge slight left
29.8 mi · 32 min
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6
Take the exit slight right toward I 95 North: Florence
1.3 km · 2 min
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7
Merge slight left
35.4 mi · 38 min
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8
Take the exit slight right toward US 521: Alcolu, Sumter
1660 ft · 41 sec
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9
Keep slight left to continue on US 521 North: Alcolu, Sumter
88 m · 7 sec
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10
Turn left
12.4 mi · 14 min
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11
Turn left onto South Guignard Parkway
1.1 mi · 1 min · South Guignard Parkway
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12
Continue on South Guignard Drive
3.6 mi · 4 min · South Guignard Drive
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13
Continue on Bultman Drive
1.1 km · 2 min · Bultman Drive
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14
Turn left onto Broad Street
1.3 km · 1 min · Broad Street
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15
Turn slight right onto Camden Highway
1.9 mi · 2 min · Camden Highway
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16
Continue on Thomas Sumter Highway
7.6 mi · 9 min · Thomas Sumter Highway
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17
Continue on Camden Highway
6.2 mi · 7 min · Camden Highway
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18
Continue on Sumter Highway
8.4 mi · 10 min · Sumter Highway
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19
Continue on Broad Street
4.2 mi · 9 min · Broad Street
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20
Continue on Kershaw Highway
14.4 mi · 16 min · Kershaw Highway
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21
Continue on Kershaw Camden Highway
2.7 mi · 3 min · Kershaw Camden Highway
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22
Continue on South Hampton Street
1.1 km · 48 sec · South Hampton Street
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23
Turn left onto South Matson Street
1.5 mi · 2 min · South Matson Street
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24
At the end of the road, turn left onto Kershaw Camden Highway
4.8 mi · 5 min · Kershaw Camden Highway
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25
Continue on Spring Street
1.3 km · 56 sec · Spring Street
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26
Turn right onto Main Street
1.5 km · 1 min · Main Street
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27
Continue on Kershaw Camden Highway
1.4 mi · 2 min · Kershaw Camden Highway
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28
Turn slight right onto Rocky River Road
7.7 mi · 14 min · Rocky River Road
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29
Enter the roundabout and take exit 3 toward the route
60 m · 3 sec
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30
Exit the roundabout
8 m · 1 sec
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31
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Summerville and Union.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 95 North
Merge slight left
35.4 mi · 00h 38m
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 Summerville and Sunny near Union.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Summerville to Union?
The road trip is about 150.9 miles (242.8 km) and usually takes 03h 00m 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?
Paxville is a useful midpoint, sitting about 75.5 miles from Summerville and 75.4 miles from Union.
How much longer is the road route than the straight-line distance?
The direct path is about 120 miles (193.2 km), while the road route adds roughly 30.9 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 10:58 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.11 one way or $42.22 round trip. Estimated CO2 is about 47.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Summerville and Sunny near Union.
Stop Ideas Near Paxville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Sumter City Hall
Summerton Town Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Paxville.
Kingstree
Camden
Columbia
Florence
Flight Path Map
This map shows the direct air route between Summerville and Union. Straight-line distance: 120.02 mi (193.15 km).
#1 Summerville
Town in South Carolina, United States
| Population | 53,301 |
| Coordinates | 33.0185000, -80.1756500 |
| Altitude | 27 |
| Country | United States |
#2 Union
County seat of Union County, South Carolina
| Population | 7,535 |
| Coordinates | 34.7157100, -80.6211800 |
| Altitude | 195 |
| Country | United States |
End: Union (-80.62118, 34.71571)
Estimated Travel Time
Distance: 243 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 01m |
| 40 mph (64.37 km/h) | 03h 46m |
| 50 mph (80.47 km/h) | 03h 01m |
| 60 mph (96.56 km/h) | 02h 30m |
| 70 mph (112.65 km/h) | 02h 09m |
| 80 mph (129 km/h) | 01h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $21.11 | $42.22 |
| Mid-grade | $4.43 | $23.61 | $47.21 |
| Premium | $4.78 | $25.47 | $50.93 |
| Diesel | $5.62 | $29.98 | $59.95 |
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 · Apr 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.