How far is Mount Pleasant, SC from Union, SC?
The driving distance from Mount Pleasant, SC to Union, SC is about 175.5 miles (282.4 km), with a travel time of about 03h 30m by car.
- The straight-line flight distance is about 139.7 miles (224.9 km).
- For a round trip, plan for roughly 07h 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 30m.
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.
City in South Carolina, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Rain Showers Likely
Driving Route Map
The map below follows the saved road route between Mount Pleasant and Union.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mount Pleasant and Union.
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1
Start on the route
23 m · 10 sec
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2
Turn right onto Coleman Boulevard
72 m · 10 sec · Coleman Boulevard
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3
Turn left onto Chuck Dawley Boulevard
1.3 mi · 2 min · Chuck Dawley Boulevard
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4
Turn straight onto Mark Clark Expressway
12 mi · 15 min · Mark Clark Expressway
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5
Take the exit slight right toward US 52 West, US 78 West: Rivers Avenue
1271 ft · 31 sec
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6
Turn slight right onto Rivers Avenue
1.1 mi · 2 min · Rivers Avenue
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7
Turn straight
534 ft · 21 sec
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8
Take the ramp slight right toward I 26 North: Columbia
2641 ft · 45 sec
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9
Merge slight left
41.7 mi · 46 min
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10
Take the exit slight right toward I 95 North: Florence
1.3 km · 2 min
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11
Merge slight left
35.4 mi · 38 min
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12
Take the exit slight right toward US 521: Alcolu, Sumter
1660 ft · 41 sec
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13
Keep slight left to continue on US 521 North: Alcolu, Sumter
88 m · 7 sec
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14
Turn left
12.4 mi · 14 min
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15
Turn left onto South Guignard Parkway
1.1 mi · 1 min · South Guignard Parkway
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16
Continue on South Guignard Drive
3.6 mi · 4 min · South Guignard Drive
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17
Continue on Bultman Drive
1.1 km · 2 min · Bultman Drive
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18
Turn left onto Broad Street
1.3 km · 1 min · Broad Street
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19
Turn slight right onto Camden Highway
1.9 mi · 2 min · Camden Highway
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20
Continue on Thomas Sumter Highway
7.6 mi · 9 min · Thomas Sumter Highway
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21
Continue on Camden Highway
6.2 mi · 7 min · Camden Highway
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22
Continue on Sumter Highway
8.4 mi · 10 min · Sumter Highway
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23
Continue on Broad Street
4.2 mi · 9 min · Broad Street
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24
Continue on Kershaw Highway
14.4 mi · 16 min · Kershaw Highway
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25
Continue on Kershaw Camden Highway
2.7 mi · 3 min · Kershaw Camden Highway
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26
Continue on South Hampton Street
1.1 km · 48 sec · South Hampton Street
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27
Turn left onto South Matson Street
1.5 mi · 2 min · South Matson Street
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28
At the end of the road, turn left onto Kershaw Camden Highway
4.8 mi · 5 min · Kershaw Camden Highway
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29
Continue on Spring Street
1.3 km · 56 sec · Spring Street
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30
Turn right onto Main Street
1.5 km · 1 min · Main Street
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31
Continue on Kershaw Camden Highway
1.4 mi · 2 min · Kershaw Camden Highway
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32
Turn slight right onto Rocky River Road
7.7 mi · 14 min · Rocky River Road
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33
Enter the roundabout and take exit 3 toward the route
60 m · 3 sec
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34
Exit the roundabout
8 m · 1 sec
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35
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Mount Pleasant 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 26 North
Merge slight left
41.7 mi · 00h 46m
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.
Showers And Thunderstorms leaving Mount Pleasant and Rain Showers Likely near Union.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mount Pleasant to Union?
The road trip is about 175.5 miles (282.4 km) and usually takes 03h 30m 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?
Manning is a useful midpoint, sitting about 87.8 miles from Mount Pleasant and 87.7 miles from Union.
How much longer is the road route than the straight-line distance?
The direct path is about 139.7 miles (224.9 km), while the road route adds roughly 35.8 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 6:00 AM to 8:00 AM EDT. If you want a more comfortable same-day return, try to leave by 9:58 AM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.52 one way or $49.04 round trip. Estimated CO2 is about 55 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Mount Pleasant and Rain Showers Likely near Union.
Stop Ideas Near Manning
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 Manning.
Kingstree
Florence
Camden
Columbia
Flight Path Map
This map shows the direct air route between Mount Pleasant and Union. Straight-line distance: 139.74 mi (224.89 km).
#1 Mount Pleasant
The second most populous city in Charleston County, South Carolina.
| Population | 92,799 |
| Coordinates | 32.7940700, -79.8625900 |
| Altitude | 3 |
| 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: 282 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 50m |
| 40 mph (64.37 km/h) | 04h 23m |
| 50 mph (80.47 km/h) | 03h 30m |
| 60 mph (96.56 km/h) | 02h 55m |
| 70 mph (112.65 km/h) | 02h 30m |
| 80 mph (129 km/h) | 02h 11m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $24.52 | $49.04 |
| Mid-grade | $4.43 | $27.42 | $54.83 |
| Premium | $4.78 | $29.58 | $59.15 |
| Diesel | $5.62 | $34.81 | $69.63 |
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 · Jun 01, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.