How far is Decatur, IL from Macomb, IL?
The driving distance from Decatur, IL to Macomb, IL is about 122.3 miles (196.8 km), with a travel time of about 02h 48m by car.
- The straight-line flight distance is about 100.2 miles (161.3 km).
- For a round trip, plan for roughly 05h 37m 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 48m.
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.
Village in Cass County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms then Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Decatur and Macomb.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Macomb.
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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
35.2 mi · 49 min
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8
At the end of the road, turn left onto East Jackson Street
2.8 mi · 4 min · East Jackson Street
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9
Turn right onto East Side Square
44 m · 4 sec · East Side Square
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10
Continue on North Side Square
141 m · 19 sec · North Side Square
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11
Turn sharp right onto North Lafayette Street
12 m · 1 sec · North Lafayette Street
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12
Arrive at your destination
0 m · 1 sec · North Lafayette Street
Car Route Details
A richer read on the saved driving route between Decatur and Macomb.
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.
Slight Chance Showers And Thunderstorms then Mostly Sunny leaving Decatur and Mostly Sunny near Macomb.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Macomb?
The road trip is about 122.3 miles (196.8 km) and usually takes 02h 48m 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?
Ashland is a useful midpoint, sitting about 61.1 miles from Decatur and 61.2 miles from Macomb.
How much longer is the road route than the straight-line distance?
The direct path is about 100.2 miles (161.3 km), while the road route adds roughly 22.1 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 12:52 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $16.25 one way or $32.51 round trip. Estimated CO2 is about 38.3 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms then Mostly Sunny around Decatur and Mostly Sunny near Macomb.
Stop Ideas Near Ashland
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 Ashland.
Springfield station
Lincoln
Carlinville
Macomb
Flight Path Map
This map shows the direct air route between Decatur and Macomb. Straight-line distance: 100.25 mi (161.34 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 Macomb
City in and the county seat of McDonough County, Illinois, United States
| Population | 17,206 |
| Coordinates | 40.4592100, -90.6718000 |
| Altitude | 215 |
| Country | United States |
End: Macomb (-90.6718, 40.45921)
Estimated Travel Time
Distance: 197 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 04m |
| 40 mph (64.37 km/h) | 03h 03m |
| 50 mph (80.47 km/h) | 02h 26m |
| 60 mph (96.56 km/h) | 02h 02m |
| 70 mph (112.65 km/h) | 01h 44m |
| 80 mph (129 km/h) | 01h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $16.25 | $32.51 |
| Mid-grade | $4.25 | $18.33 | $36.66 |
| Premium | $4.65 | $20.06 | $40.12 |
| Diesel | $5.30 | $22.86 | $45.72 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.