How far is Mount Pleasant, SC from Irwin, SC?
The driving distance from Mount Pleasant, SC to Irwin, SC is about 179.6 miles (289.1 km), with a travel time of about 03h 35m by car.
- The straight-line flight distance is about 142.4 miles (229.1 km).
- For a round trip, plan for roughly 07h 10m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM EST.
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 35m.
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 Calhoun County, South Carolina
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Mount Pleasant and Irwin.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mount Pleasant and Irwin.
-
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
99.2 mi · 1 hr 48 min
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10
Take the exit slight right toward US 1 North: West Columbia
1062 ft · 26 sec
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11
Merge slight left onto Augusta Road
2930 ft · 42 sec · Augusta Road
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12
Turn straight onto Jarvis Klapman Boulevard
2.7 mi · 3 min · Jarvis Klapman Boulevard
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13
Continue on Hampton Street
1.4 mi · 3 min · Hampton Street
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14
Turn left onto Bull Street
1.3 mi · 2 min · Bull Street
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15
Continue on I. DeQuincey Newman Freeway
7.6 mi · 9 min · I. DeQuincey Newman Freeway
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16
Merge slight left onto Charles F Bolden Freeway
21.4 mi · 23 min · Charles F Bolden Freeway
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17
Take the exit slight right toward Road 41, Winnsboro
1519 ft · 37 sec
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18
Turn right onto Duraham Place Road
2.6 mi · 4 min · Duraham Place Road
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19
Turn slight left
12.6 mi · 18 min
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20
Turn right onto Pendergrass Boulevard
1.3 mi · 2 min · Pendergrass Boulevard
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21
Turn left onto Catawba River Road
7.6 mi · 11 min · Catawba River Road
-
22
Take the ramp slight right
114 m · 7 sec
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23
Keep slight left
30 m · 3 sec
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24
Merge slight left onto Texaco Road
137 m · 11 sec · Texaco Road
-
25
Turn left onto Lancaster Highway
2.8 mi · 4 min · Lancaster Highway
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26
Turn right onto Grace Avenue
2.2 mi · 5 min · Grace Avenue
-
27
Turn left onto Thompson Avenue
795 ft · 37 sec · Thompson Avenue
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28
Turn right onto Confederate Avenue
947 ft · 42 sec · Confederate Avenue
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29
Arrive at your destination
0 m · 1 sec · Confederate Avenue
Car Route Details
A richer read on the saved driving route between Mount Pleasant and Irwin.
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
99.2 mi · 01h 48m
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.
Mostly Cloudy leaving Mount Pleasant and Light Rain near Irwin.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mount Pleasant to Irwin?
The road trip is about 179.6 miles (289.1 km) and usually takes 03h 35m 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?
Saint Matthews is a useful midpoint, sitting about 89.9 miles from Mount Pleasant and 89.7 miles from Irwin.
How much longer is the road route than the straight-line distance?
The direct path is about 142.4 miles (229.1 km), while the road route adds roughly 37.2 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 EST. If you want a more comfortable same-day return, try to leave by 9:50 AM EST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $22.84 one way or $45.67 round trip. Estimated CO2 is about 56.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Mount Pleasant and Light Rain near Irwin.
Stop Ideas Near Saint Matthews
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 Saint Matthews.
Columbia
Denmark
Camden
Kingstree
Flight Path Map
This map shows the direct air route between Mount Pleasant and Irwin. Straight-line distance: 142.36 mi (229.11 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 Irwin
Irwin is a place in South Carolina, United States.
| Population | 0 |
| Coordinates | 34.6937600, -80.8222900 |
| Altitude | 149 |
| Country | United States |
End: Irwin (-80.82229, 34.69376)
Estimated Travel Time
Distance: 289 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 59m |
| 40 mph (64.37 km/h) | 04h 29m |
| 50 mph (80.47 km/h) | 03h 35m |
| 60 mph (96.56 km/h) | 02h 59m |
| 70 mph (112.65 km/h) | 02h 33m |
| 80 mph (129 km/h) | 02h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.60 | $22.84 | $45.67 |
| Mid-grade | $4.06 | $25.72 | $51.43 |
| Premium | $4.46 | $28.24 | $56.49 |
| Diesel | $5.72 | $36.23 | $72.47 |
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 · Nov 06, 2026