How far is Naperville, IL from Flanagan, IL?
The driving distance from Naperville, IL to Flanagan, IL is about 87 miles (140 km), with a travel time of about 01h 53m by car.
- The straight-line flight distance is about 72.8 miles (117.2 km).
- For a round trip, plan for roughly 03h 46m 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 53m.
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 Grundy County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Naperville and Flanagan.
Turn-by-Turn Driving Directions
Step-by-step road directions between Naperville and Flanagan.
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1
Start on North Washington Street
5.3 mi · 12 min · North Washington Street
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2
Turn right onto Washington Street
2580 ft · 51 sec · Washington Street
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3
Continue on Weber Road
3.9 mi · 7 min · Weber Road
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4
Take the ramp slight right toward I 55 South: Bloomington
1902 ft · 49 sec
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5
Merge slight left
66.2 mi · 1 hr 13 min
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6
Take the exit slight right toward IL 116: Pontiac, Flanagan
1958 ft · 34 sec
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7
Turn right onto West Reynolds Street
796 ft · 16 sec · West Reynolds Street
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8
Continue on East 1700 North Road
2.4 mi · 4 min · East 1700 North Road
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9
Continue on E 1700 N Rd
1.9 mi · 3 min · E 1700 N Rd
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10
Continue on East 1700 North Road
4.9 mi · 9 min · East 1700 North Road
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11
Continue on E 1700 N Rd
134 m · 9 sec · E 1700 N Rd
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12
Continue on East Falcon Highway
2444 ft · 54 sec · East Falcon Highway
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13
Turn right onto South Jefferson Street
2533 ft · 1 min · South Jefferson Street
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14
Turn right onto Lumber Street
121 m · 23 sec · Lumber Street
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15
Turn left onto Main Street
21 m · 5 sec · Main Street
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16
Turn right
4 m · 1 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Naperville and Flanagan.
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 55 South
Merge slight left
66.2 mi · 01h 13m
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.
Sunny leaving Naperville and Sunny near Flanagan.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Naperville to Flanagan?
The road trip is about 87 miles (140 km) and usually takes 01h 53m 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?
Braceville is a useful midpoint, sitting about 43.5 miles from Naperville and 43.5 miles from Flanagan.
How much longer is the road route than the straight-line distance?
The direct path is about 72.8 miles (117.2 km), while the road route adds roughly 14.2 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 2:44 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.58 one way or $23.15 round trip. Estimated CO2 is about 27.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Naperville and Sunny near Flanagan.
Stop Ideas Near Braceville
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 Braceville.
Dwight station
Kankakee
Joliet Transportation Center
Pontiac station
Flight Path Map
This map shows the direct air route between Naperville and Flanagan. Straight-line distance: 72.84 mi (117.22 km).
#1 Naperville
The second most populous city in Illinois.
| Population | 147,986 |
| Coordinates | 41.7858600, -88.1472900 |
| Altitude | 216 |
| Country | United States |
#2 Flanagan
City in Illinois, United States of America
| Population | 1,057 |
| Coordinates | 40.8780900, -88.8611800 |
| Altitude | 204 |
| Country | United States |
End: Flanagan (-88.86118, 40.87809)
Estimated Travel Time
Distance: 140 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 53m |
| 40 mph (64.37 km/h) | 02h 10m |
| 50 mph (80.47 km/h) | 01h 44m |
| 60 mph (96.56 km/h) | 01h 26m |
| 70 mph (112.65 km/h) | 01h 14m |
| 80 mph (129 km/h) | 01h 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $11.58 | $23.15 |
| Mid-grade | $4.25 | $13.06 | $26.11 |
| Premium | $4.65 | $14.29 | $28.58 |
| Diesel | $5.30 | $16.28 | $32.57 |
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.