How far is Union, SC from North Charleston, SC?
The driving distance from Union, SC to North Charleston, SC is about 176.3 miles (283.8 km), with a travel time of about 02h 49m by car.
- The straight-line flight distance is about 159.7 miles (257 km).
- For a round trip, plan for roughly 05h 38m 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 49m.
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.
Town in Lexington County, South Carolina, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Union and North Charleston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Union and North Charleston.
-
1
Start on North Pinckney Street
1.3 mi · 2 min · North Pinckney Street
-
2
Continue on Whitmire Highway
15.2 mi · 17 min · Whitmire Highway
-
3
Turn slight left onto Watson Street
7.4 mi · 11 min · Watson Street
-
4
Keep slight right to continue on State Highway 121
6.1 mi · 9 min · State Highway 121
-
5
Take the ramp slight right
1191 ft · 29 sec
-
6
Merge slight left
36.2 mi · 40 min
-
7
Keep slight right to continue on Charleston
107.3 mi · 1 hr 59 min
-
8
Take the exit slight right toward SC 642: Dorchester Road
1270 ft · 33 sec
-
9
Turn left onto Dorchester Road
1.2 km · 2 min · Dorchester Road
-
10
Turn right onto Rivers Avenue
1501 ft · 29 sec · Rivers Avenue
-
11
Arrive at your destination
0 m · 1 sec · Rivers Avenue
Car Route Details
A richer read on the saved driving route between Union and North Charleston.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Charleston
Keep slight right to continue on Charleston
107 mi · 01h 59m
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 Union and Mostly Sunny near North Charleston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Union to North Charleston?
The road trip is about 176.3 miles (283.8 km) and usually takes 02h 49m 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?
Swansea is a useful midpoint, sitting about 87.5 miles from Union and 88.9 miles from North Charleston.
How much longer is the road route than the straight-line distance?
The direct path is about 159.7 miles (257 km), while the road route adds roughly 16.6 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 12:52 PM EDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.64 one way or $49.27 round trip. Estimated CO2 is about 55.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Union and Mostly Sunny near North Charleston.
Stop Ideas Near Swansea
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 Swansea.
Columbia
Denmark
Camden
Kingstree
Flight Path Map
This map shows the direct air route between Union and North Charleston. Straight-line distance: 159.67 mi (256.96 km).
#1 Union
Township of Union County, New Jersey
| Population | 8,045 |
| Coordinates | 34.7154100, -81.6237100 |
| Altitude | 196 |
| Country | United States |
#2 North Charleston
The second most populous city in Charleston County, South Carolina.
| Population | 118,752 |
| Coordinates | 32.8546200, -79.9748100 |
| Altitude | 6 |
| Country | United States |
End: US 52 (-79.97488, 32.854524)
Estimated Travel Time
Distance: 284 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 52m |
| 40 mph (64.37 km/h) | 04h 24m |
| 50 mph (80.47 km/h) | 03h 31m |
| 60 mph (96.56 km/h) | 02h 56m |
| 70 mph (112.65 km/h) | 02h 31m |
| 80 mph (129 km/h) | 02h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.96 | $24.64 | $49.27 |
| Mid-grade | $4.43 | $27.55 | $55.10 |
| Premium | $4.78 | $29.72 | $59.44 |
| Diesel | $5.62 | $34.98 | $69.96 |
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 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.