How far is Decatur, IL from Oswego, IL?
The driving distance from Decatur, IL to Oswego, IL is about 150.9 miles (242.9 km), with a travel time of about 03h 02m by car.
- The straight-line flight distance is about 131.2 miles (211.1 km).
- For a round trip, plan for roughly 06h 04m 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 02m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Scattered Showers And Thunderstorms
Isolated Rain Showers
Driving Route Map
The map below follows the saved road route between Decatur and Oswego.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Oswego.
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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
64.9 mi · 1 hr 10 min
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6
Take the exit slight right toward IL 47: Morris, Dwight
1853 ft · 35 sec
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7
Turn left
32 mi · 39 min
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8
Turn right onto Walker Road
1.5 mi · 2 min · Walker Road
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9
Turn left onto Ashley Road
2.8 mi · 4 min · Ashley Road
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10
At the end of the road, turn right onto East Schoolhouse Road
2391 ft · 46 sec · East Schoolhouse Road
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11
Turn left onto Minkler Road
3.4 mi · 5 min · Minkler Road
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12
Enter the roundabout and take exit 2 toward Minkler Road
38 m · 4 sec · Minkler Road
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13
Exit the roundabout onto Minkler Road
1.5 km · 2 min · Minkler Road
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14
Turn right
1.5 mi · 3 min
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15
Continue straight
116 m · 16 sec
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16
Turn left onto East Washington Street
2272 ft · 1 min · East Washington Street
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17
Arrive at your destination
0 m · 1 sec · East Washington Street
Car Route Details
A richer read on the saved driving route between Decatur and Oswego.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
I 74 West
Take the exit slight right toward I 74 West, US 51 North: Peoria, Rockford
64.9 mi · 01h 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.
Scattered Showers And Thunderstorms leaving Decatur and Isolated Rain Showers near Oswego.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Oswego?
The road trip is about 150.9 miles (242.9 km) and usually takes 03h 02m 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?
Chenoa is a useful midpoint, sitting about 75.5 miles from Decatur and 75.4 miles from Oswego.
How much longer is the road route than the straight-line distance?
The direct path is about 131.2 miles (211.1 km), while the road route adds roughly 19.7 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 10:56 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.10 one way or $40.20 round trip. Estimated CO2 is about 47.4 kg one way.
What should you check before leaving?
Before you leave, expect Scattered Showers And Thunderstorms around Decatur and Isolated Rain Showers near Oswego.
Stop Ideas Near Chenoa
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 Chenoa.
Pontiac station
Uptown Station
Dwight station
Gilman
Flight Path Map
This map shows the direct air route between Decatur and Oswego. Straight-line distance: 131.16 mi (211.08 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 Oswego
City in and county seat of Oswego County, New York, United States
| Population | 36,696 |
| Coordinates | 41.6828100, -88.3514600 |
| Altitude | 195 |
| Country | United States |
End: Oswego (-88.35146, 41.68281)
Estimated Travel Time
Distance: 243 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 01m |
| 40 mph (64.37 km/h) | 03h 46m |
| 50 mph (80.47 km/h) | 03h 01m |
| 60 mph (96.56 km/h) | 02h 30m |
| 70 mph (112.65 km/h) | 02h 09m |
| 80 mph (129 km/h) | 01h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $20.10 | $40.20 |
| Mid-grade | $4.25 | $22.67 | $45.34 |
| Premium | $4.65 | $24.81 | $49.61 |
| Diesel | $5.30 | $28.27 | $56.54 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.