How far is La Grange, IL from Decatur, IL?
The driving distance from La Grange, IL to Decatur, IL is about 100.3 miles (161.4 km), with a travel time of about 01h 54m by car.
- The straight-line flight distance is about 84.2 miles (135.5 km).
- For a round trip, plan for roughly 03h 48m 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 54m.
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 Sangamon County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between La Grange and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between La Grange and Decatur.
-
1
Start on County Road 12
1.4 km · 2 min · County Road 12
-
2
Continue on County Road 1965 East
1.4 km · 2 min · County Road 1965 East
-
3
Continue on La Grange Road
4.5 mi · 11 min · La Grange Road
-
4
Turn left onto County Road 1560 East
1601 ft · 44 sec · County Road 1560 East
-
5
Continue on County Road 1495 East
1.4 mi · 3 min · County Road 1495 East
-
6
Continue on County Road 1465 East
2713 ft · 1 min · County Road 1465 East
-
7
Turn left
3.7 mi · 6 min
-
8
Turn right
41 m · 13 sec
-
9
Turn sharp left onto Mill Street
1043 ft · 21 sec · Mill Street
-
10
Continue on Main Street
1.5 mi · 3 min · Main Street
-
11
Continue on Illinois Route 104
2.3 mi · 4 min · Illinois Route 104
-
12
Continue straight
1.5 km · 1 min
-
13
Continue on US Highway 67
17.5 mi · 20 min · US Highway 67
-
14
Take the exit slight right toward I 72 East: Quincy
1842 ft · 45 sec
-
15
Merge slight left
41.9 mi · 45 min
-
16
Take the exit slight right toward I 72 East, US 36 East: Decatur
30 mi · 33 min
-
17
Take the exit slight right toward US 36 East, US 51 South: Decatur, Pana
1656 ft · 41 sec
-
18
Keep slight left to continue on US 36 East: Decatur
5.5 mi · 8 min
-
19
Turn right onto North Main Street
1985 ft · 49 sec · North Main Street
-
20
Turn left onto East Wood Street
91 m · 8 sec · East Wood Street
-
21
Arrive at your destination
0 m · 1 sec · East Wood Street
Car Route Details
A richer read on the saved driving route between La Grange and Decatur.
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 72 East
Merge slight left
41.9 mi · 00h 45m
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.
Mostly Sunny then Chance Showers And Thunderstorms leaving La Grange and Mostly Sunny then Chance 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 La Grange to Decatur?
The road trip is about 100.3 miles (161.4 km) and usually takes 01h 54m 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?
New Berlin is a useful midpoint, sitting about 56.4 miles from La Grange and 43.9 miles from Decatur.
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 16.1 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 2:42 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.35 one way or $26.70 round trip. Estimated CO2 is about 31.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Chance Showers And Thunderstorms around La Grange and Mostly Sunny then Chance Showers And Thunderstorms near Decatur.
Stop Ideas Near New Berlin
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 New Berlin.
Springfield station
Carlinville
Lincoln
Alton
Flight Path Map
This map shows the direct air route between La Grange and Decatur. Straight-line distance: 84.21 mi (135.53 km).
#1 La Grange
Village in Cook County, Illinois, United States of America
| Population | 15,292 |
| Coordinates | 39.9472700, -90.5373500 |
| Altitude | 142 |
| 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: 161 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 20m |
| 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 25m |
| 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 | $13.35 | $26.70 |
| Mid-grade | $4.25 | $15.06 | $30.11 |
| Premium | $4.65 | $16.48 | $32.95 |
| Diesel | $5.30 | $18.78 | $37.55 |
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.