Charleston, SC to Johnston, SC is 144.3 miles and takes about 3h 13m via I 26 and Old Ninety Six Indian Trail, with a fuel budget near $24 and enough daylight to finish in a day. This one-day trip stays entirely within South Carolina, moving from the Southeast region to another part of the Southeast. The route offers a mixed highway and surface road experience, making it a practical choice for a straightforward drive. Consider this trip if you're looking for an efficient way to get from the coast inland.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
72.2 miles from Charleston, SC
A natural place for your longest stop of the day
, about 1h 24m into the drive
.
Main Roads
Road
Distance
Duration
I 26
66.1 mi
1h 14m
Old Ninety Six Indian Trail
19.6 mi
28m
North Road
16.3 mi
24m
Highway 23
7.4 mi
12m
Salley Road
7 mi
9m
Five Chop Road
6.4 mi
8m
John Nunn Highway
4.1 mi
5m
Chestnut Street
3.1 mi
4m
Longest stretch:
I 26
— 66.1 mi, about 1h 14m
Traffic on I-26
Hour-of-day weekday pattern from 38 FHWA count stations on your route.
Peak
3 PM
~3,305 veh/hr typical
Quietest
2 AM
~236 veh/hr
Peak-to-quiet ratio
14×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Charleston, SC and Johnston, SC.
1
Start on Broad Street
40 ft·5 sec·Broad Street
2
Turn right onto S-10-107
0.7 mi·1 min·Meeting Street
Use the straight lane.
3
Turn left onto Calhoun Street
0.1 mi·15 sec·Calhoun Street
4
Turn right onto S-10-104
0.6 mi·1 min·King Street
5
Turn left onto Spring Street
0.2 mi·30 sec·Spring Street
6
Turn right onto Coming Street
0.2 mi·31 sec·Coming Street
7
Turn right onto US 17
0.6 mi·1 min·Septima Clark Expressway
8
Keep slight left at fork onto I 26
66 mi·1 hr 14 min·I 26
Use the straight / slight right lanes.
9
Take the exit
0.3 mi·37 sec
Exit 154-AToward US 301 South: Orangeburg
10
Merge onto US 301
6.4 mi·8 min·Five Chop Road
11
Turn right onto US 21; US 178; US 601 Truck
1.1 mi·1 min·Whittaker Parkway
12
Continue on US 21; US 178; US 601 Truck
3.1 mi·4 min·Chestnut Street
13
Continue on US 178
16 mi·24 min·North Road
14
Turn left onto SC 394
7.0 mi·9 min·Salley Road
15
Enter roundabout onto SC 394
146 ft·2 sec·SC 394
16
Continue on SC 394
1.1 mi·1 min·SC 394
17
Turn right onto SC 389
4.1 mi·5 min·John Nunn Highway
18
Continue on SC 389
1.1 mi·2 min·Walker Road
19
Turn straight onto SC 39
2.3 mi·3 min·Festival Trail Road
20
Continue on SC 39
1.1 mi·2 min·Railroad Avenue East
21
Continue on SC 39
20 mi·28 min·Old Ninety Six Indian Trail
22
Continue on SC 39
0.7 mi·1 min·Main Street
23
Turn left onto SC 23; SC 39
2.1 mi·3 min·Highway 23
24
Continue on SC 23; SC 39
1.6 mi·2 min·East Main Street
25
Continue on SC 23
3.1 mi·5 min·Highway 23
26
Continue on SC 23
0.7 mi·1 min·East Front Street
27
Continue on SC 23
2.2 mi·3 min·Highway 23
28
Continue on SC 23
1.8 mi·3 min·Calhoun Street
29
Turn left onto SC 121
19 ft·0 sec·Lee Street
30
Arrive at destination
SC 121
Trip Plan
For this 3h 13m drive, leaving Charleston in the morning will give you ample daylight to reach Johnston. With only one recommended stop and a fuel cost estimated at $24, this is an easy same-day trip. The longest continuous stretch is 66.1 miles on I 26, so plan for a break around the halfway point of that section if needed. Keep an eye on your fuel gauge as you transition to surface roads, as gas stations may be less frequent than on the interstate.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 72.2 miles from Charleston, SC, or about 1h 24m into the drive.
The longest continuous stretch on this route runs about 66.1 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 32 miles or 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 72.2 miles or 1h 24m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 31m
Traffic, exits, and arrival timing usually matter more near Johnston, SC than in the middle of the route.
Before You Leave
+
Open the route before leaving Charleston, SC so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Charleston, SC
This is one driving day of about 144.3 miles and 3h 13m.
Your first comfortable stop window is around 32 miles from Charleston, SC.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 26 for about 66.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 14
5 decision points cluster between mile 0 and 75.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0 mi into trip|~0m in|S-10-107 / Meeting Street
Turn right onto S-10-107 / Meeting Street
Lane positioning matters here
Use the straight lane.
5
1.6 mi into trip|~3m in|Coming Street
Turn right onto Coming Street
Navigation decision point
6
2.4 mi into trip|~5m in|I 26
Keep slight left at fork onto I 26
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
5
68.6 mi into trip|~1h 19m in
Take the exit toward US 301 South: Orangeburg
Exit ramp - move to the correct lane early
Exit 154-A
Toward US 301 South: Orangeburg
4
75.2 mi into trip|~1h 28m in|US 21; US 178; US 601 Truck / Whittaker Parkway
Turn right onto US 21; US 178; US 601 Truck / Whittaker Parkway
Navigation decision point
Fuel & Cost
Regular Gas
$22.95 one way
$45.90 round trip
$4.04/gal25.4 MPG avg51 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.41
$25.03
$50.05
premium
$4.78
$27.15
$54.30
diesel
$5.35
$30.39
$60.79
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$23
Meals
$25–$50
Total
$48–$73
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 50.5 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $15 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
43.3
0
$15.15
$6.93
Efficient EV
36.1
0
$12.63
$5.77
EV Truck/SUV
57.7
0
$20.20
$9.24
Gas CO2
50 kg
EV CO2
17 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jun 2, 2026
Origin
Charleston, SC
Evening
in Charleston on Wednesday
Local time
5:46 PM
EDT
Current temp
70°F
Chance Showers And Thunderstorms
W 2 mph40% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued June 1 at 7:50PM EDT until June 2 at 8:00PM EDT by NWS Wilmington NC
Destination
Johnston, SC
Evening
in Johnston on Wednesday
Local time
5:46 PM
EDT
Current temp
64°F
Chance Showers And Thunderstorms
NE 3 mph33% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued June 1 at 7:50PM EDT until June 2 at 8:00PM EDT by NWS Wilmington NC
67°F
Oak Grove, SC
72 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
6 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 13m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Fort Sumter and Fort Moultrie National Historical Park
National Historical Park
Two forts stand at the entrance of Charleston Harbor. Patriots inside a palmetto log fort, later named Fort Moultrie, defeated the Royal Navy in 1776. As Charleston blazed a path towards secession to...
Astonishing biodiversity exists in Congaree National Park, the largest intact expanse of old growth bottomland hardwood forest remaining in the southeastern United States. Waters from the Congaree and...
20 mi from route
~49 min detour
Free
near mile 89.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
About 53% of this 144.3-mile drive is on highways, with the longest stretch on I 26 covering 66.1 miles. You'll transition from highway cruising to surface roads, indicated by the profile as mixed highway & surface. Expect to notice more frequent exits and varying speed limits as you move from the interstate onto Old Ninety Six Indian Trail and North Road.
53% highway, the rest on surface roads — varied driving throughout.
30 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 66.1 mi on I 26.
How Hard Is This Drive?
4/10
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near S-10-107 / Meeting Street.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 3h 13m drive. You will face about 14 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: near the start (S-10-107 / Meeting Street): Lane positioning matters here; at 1.6 miles (Coming Street): Navigation decision point; at 2.4 miles (I 26): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
661 ft11 ft
Total Climb
658 ft
Total Descent
9 ft
Highest Point
661 ft
~144.3 mi in
Elevation Range
650 ft
Detours Along the Way
Tagged by where each one fits in your drive — first break, midpoint, final stretch.
Charleston is the largest and oldest city in the state of South Carolina in the United States of America. Its historic downtown is on a peninsula formed by two rivers, the Ashley and the Cooper, flowing into the Atlantic, and protected from the open ocean by surrounding islands. Charleston was captured in the American Civil War without much property damage, so the historic part of town has buildings that are hundreds of years old. The current downtown skyline, with practically no tall buildings due to the city's height restriction ordinance, is dominated by church steeples and the stunning Arthur Ravenel cable-stay bridge over the Cooper River. The city is a major port on the eastern seaboard of the U.S. and a popular destination for domestic and international tourists.
Top landmarks
•Fort Sumter — fort in Charleston, South Carolina
•College of Charleston — liberal arts college in Charleston, South Carolina, USA
•Emanuel African Methodist Episcopal Church — church in Charleston, South Carolina
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 66.1 miles on I 26. The full list of main roads is in the Roads section above.
Yes — we found about 10 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: near the start (S-10-107 / Meeting Street): Lane positioning matters here; at 1.6 miles (Coming Street): Navigation decision point; at 2.4 miles (I 26): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Fort Sumter and Fort Moultrie National Historical Park and Congaree National Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.2 hours each way, an in-and-out day trip would put you behind the wheel for 6.4 hours — manageable with a long break at Johnston, SC, but most travelers stay overnight.
