How far is Charleston, IL from Decatur, IL?
The driving distance from Charleston, IL to Decatur, IL is about 55.6 miles (89.5 km), with a travel time of about 01h 10m by car.
- The straight-line flight distance is about 47.8 miles (76.9 km).
- For a round trip, plan for roughly 02h 21m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
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 01h 10m.
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.
City in Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Charleston and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Charleston and Decatur.
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1
Start on Madison Avenue
146 m · 20 sec · Madison Avenue
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2
Turn left onto 4th Street
1.3 km · 2 min · 4th Street
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3
Turn right onto Lincoln Avenue
1.7 mi · 3 min · Lincoln Avenue
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4
Continue on Illinois Route 16
5.3 mi · 7 min · Illinois Route 16
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5
Turn right onto Lerna Road
2702 ft · 57 sec · Lerna Road
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6
Turn left onto Dewitt Avenue East
5.8 mi · 10 min · Dewitt Avenue East
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7
Continue on Route 121
35.3 mi · 51 min · Route 121
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8
Continue on South Mount Zion Road
2.1 mi · 3 min · South Mount Zion Road
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9
Turn left
4.7 mi · 8 min
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10
Turn left onto North Main Street
1985 ft · 49 sec · North Main Street
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11
Turn left onto East Wood Street
91 m · 8 sec · East Wood Street
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12
Arrive at your destination
0 m · 1 sec · East Wood Street
Car Route Details
A richer read on the saved driving route between Charleston and Decatur.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Route 121
Continue on Route 121
35.3 mi · 00h 51m
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.
Showers And Thunderstorms leaving Charleston and Showers And Thunderstorms near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Charleston to Decatur?
The road trip is about 55.6 miles (89.5 km) and usually takes 01h 10m 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?
Sullivan is a useful midpoint, sitting about 28.3 miles from Charleston and 27.3 miles from Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 47.8 miles (76.9 km), while the road route adds roughly 7.8 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:08 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.39 one way or $14.78 round trip. Estimated CO2 is about 17.4 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Charleston and Showers And Thunderstorms near Decatur.
Stop Ideas Near Sullivan
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 Sullivan.
Mattoon station
Effingham
Illinois Terminal
Rantoul
Flight Path Map
This map shows the direct air route between Charleston and Decatur. Straight-line distance: 47.75 mi (76.85 km).
#1 Charleston
City in Illinois
| Population | 20,034 |
| Coordinates | 39.4961500, -88.1761500 |
| Altitude | 204 |
| Country | United States |
#2 Decatur
The most populous city in Macon County, Illinois.
| Population | 70,007 |
| Coordinates | 39.8403100, -88.9548000 |
| Altitude | 205 |
| Country | United States |
End: East Wood Street (-88.954801, 39.840341)
Estimated Travel Time
Distance: 89 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 51m |
| 40 mph (64.37 km/h) | 01h 23m |
| 50 mph (80.47 km/h) | 01h 06m |
| 60 mph (96.56 km/h) | 00h 55m |
| 70 mph (112.65 km/h) | 00h 47m |
| 80 mph (129 km/h) | 00h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.39 | $14.78 |
| Mid-grade | $4.25 | $8.34 | $16.67 |
| Premium | $4.65 | $9.12 | $18.24 |
| Diesel | $5.30 | $10.40 | $20.79 |
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 Illinois · May 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.