How far is Decatur, IL from La Grange, IL?
The driving distance from Decatur, IL to La Grange, IL is about 100.6 miles (161.9 km), with a travel time of about 02h 28m by car.
- The straight-line flight distance is about 84.2 miles (135.5 km).
- For a round trip, plan for roughly 04h 57m 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 02h 28m.
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.
Township in Richland County, 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 Decatur and La Grange.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and La Grange.
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1
Start on East Wood Street
155 m · 23 sec · East Wood Street
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2
Turn left onto South Franklin Street
1982 ft · 49 sec · South Franklin Street
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3
Turn left onto West Eldorado Street
35.8 mi · 41 min · West Eldorado Street
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4
Continue on Clear Lake Avenue
2.3 mi · 4 min · Clear Lake Avenue
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5
Continue on East Jefferson Street
8.5 mi · 15 min · East Jefferson Street
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6
Continue straight
37.1 mi · 54 min
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7
Continue straight
2 mi · 3 min
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8
Turn left
7 mi · 12 min
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9
Turn left onto Lagrange Lock Road
5.8 mi · 14 min · Lagrange Lock Road
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10
Continue on County Road 1965 East
1.3 mi · 3 min · County Road 1965 East
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11
Continue on County Road 12
2015 ft · 55 sec · County Road 12
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12
Arrive at your destination
0 m · 1 sec · County Road 12
Car Route Details
A richer read on the saved driving route between Decatur and La Grange.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
East Jefferson Street
Continue straight
37.1 mi · 00h 54m
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 Decatur and Showers And Thunderstorms near La Grange.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to La Grange?
The road trip is about 100.6 miles (161.9 km) and usually takes 02h 28m 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?
Richland is a useful midpoint, sitting about 50.2 miles from Decatur and 50.4 miles from La Grange.
How much longer is the road route than the straight-line distance?
The direct path is about 84.2 miles (135.5 km), while the road route adds roughly 16.4 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 1:32 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.39 one way or $26.77 round trip. Estimated CO2 is about 31.5 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Decatur and Showers And Thunderstorms near La Grange.
Stop Ideas Near Richland
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 Richland.
Springfield station
Lincoln
Carlinville
Peoria, Illinois
Flight Path Map
This map shows the direct air route between Decatur and La Grange. Straight-line distance: 84.21 mi (135.53 km).
#1 Decatur
The most populous city in Macon County, Illinois.
| Population | 70,007 |
| Coordinates | 39.8403100, -88.9548000 |
| Altitude | 205 |
| Country | United States |
#2 La Grange
Village in Cook County, Illinois, United States of America
| Population | 15,292 |
| Coordinates | 39.9472700, -90.5373500 |
| Altitude | 142 |
| Country | United States |
End: La Grange (-90.53735, 39.94727)
Estimated Travel Time
Distance: 162 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 21m |
| 40 mph (64.37 km/h) | 02h 30m |
| 50 mph (80.47 km/h) | 02h 00m |
| 60 mph (96.56 km/h) | 01h 40m |
| 70 mph (112.65 km/h) | 01h 26m |
| 80 mph (129 km/h) | 01h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $13.39 | $26.77 |
| Mid-grade | $4.25 | $15.10 | $30.20 |
| Premium | $4.65 | $16.52 | $33.04 |
| Diesel | $5.30 | $18.83 | $37.66 |
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 · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.