How far is Decatur, IL from Machesney Park, IL?
The driving distance from Decatur, IL to Machesney Park, IL is about 185.7 miles (298.9 km), with a travel time of about 03h 35m by car.
- The straight-line flight distance is about 173.2 miles (278.8 km).
- For a round trip, plan for roughly 07h 10m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 03h 35m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Human settlement in Illinois, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms then Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Decatur and Machesney Park.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Machesney Park.
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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
2129 ft · 46 sec · South Franklin Street
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3
Continue on North Water Street
27.4 mi · 37 min · North Water Street
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4
Continue on North 1450 East Road
14.7 mi · 18 min · North 1450 East Road
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5
Take the exit slight right toward I 74 West, US 51 North: Peoria, Rockford
8.9 mi · 10 min
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6
Take the exit slight right toward I 39 North: Rockford
120.7 mi · 2 hr 10 min
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7
Merge slight left
2.2 mi · 3 min
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8
Continue straight
1.7 mi · 2 min
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9
Merge slight right onto Jane Addams Memorial Tollway
3.8 mi · 4 min · Jane Addams Memorial Tollway
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10
Take the exit slight right toward East Riverside Boulevard
2080 ft · 53 sec
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11
Turn left onto East Riverside Boulevard
1.6 km · 2 min · East Riverside Boulevard
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12
Turn right onto North Perryville Road
1.5 mi · 3 min · North Perryville Road
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13
Continue on Perryville Road
1.2 km · 1 min · Perryville Road
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14
Turn left onto Harlem Road
1 mi · 2 min · Harlem Road
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15
Turn right onto North Alpine Road
2676 ft · 1 min · North Alpine Road
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16
Turn left onto Roosevelt Road
2753 ft · 1 min · Roosevelt Road
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17
Arrive at your destination
0 m · 1 sec · Roosevelt Road
Car Route Details
A richer read on the saved driving route between Decatur and Machesney Park.
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 39 North
Take the exit slight right toward I 39 North: Rockford
121 mi · 02h 10m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Slight Chance Showers And Thunderstorms then Mostly Sunny leaving Decatur and Sunny near Machesney Park.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Machesney Park?
The road trip is about 185.7 miles (298.9 km) and usually takes 03h 35m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Lostant is a useful midpoint, sitting about 93 miles from Decatur and 92.8 miles from Machesney Park.
How much longer is the road route than the straight-line distance?
The direct path is about 173.2 miles (278.8 km), while the road route adds roughly 12.5 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 9:50 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.70 one way or $49.40 round trip. Estimated CO2 is about 58.2 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms then Mostly Sunny around Decatur and Sunny near Machesney Park.
Stop Ideas Near Lostant
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 Lostant.
Princeton
Mendota station
Pontiac station
Dwight station
Flight Path Map
This map shows the direct air route between Decatur and Machesney Park. Straight-line distance: 173.27 mi (278.85 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 Machesney Park
Village in the U.
| Population | 22,678 |
| Coordinates | 42.3472400, -89.0390000 |
| Altitude | 226 |
| Country | United States |
End: Machesney Park (-89.039, 42.34724)
Estimated Travel Time
Distance: 299 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 11m |
| 40 mph (64.37 km/h) | 04h 38m |
| 50 mph (80.47 km/h) | 03h 42m |
| 60 mph (96.56 km/h) | 03h 05m |
| 70 mph (112.65 km/h) | 02h 39m |
| 80 mph (129 km/h) | 02h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $24.70 | $49.40 |
| Mid-grade | $4.25 | $27.86 | $55.71 |
| Premium | $4.65 | $30.48 | $60.97 |
| Diesel | $5.30 | $34.74 | $69.48 |
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 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.