How far is Flagg, IL from Naperville, IL?
The driving distance from Flagg, IL to Naperville, IL is about 58.2 miles (93.7 km), with a travel time of about 01h 03m by car.
- The straight-line flight distance is about 51.7 miles (83.2 km).
- For a round trip, plan for roughly 02h 06m 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 03m.
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.
City in Illinois, United States of America
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 Flagg and Naperville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Flagg and Naperville.
-
1
Start on East Titus Road
19 m · 5 sec · East Titus Road
-
2
Turn right onto South Grange Road
1.1 mi · 4 min · South Grange Road
-
3
Turn right onto Lincoln Avenue
4 mi · 7 min · Lincoln Avenue
-
4
Turn left onto 8th Street
122 m · 11 sec · 8th Street
-
5
Turn right onto 4th Avenue
81 m · 5 sec · 4th Avenue
-
6
Turn right
1.7 mi · 3 min
-
7
Turn left
2198 ft · 54 sec
-
8
Merge slight left onto Ronald Reagan Memorial Tollway
48.3 mi · 53 min · Ronald Reagan Memorial Tollway
-
9
Take the exit slight right toward Winfield Road
2012 ft · 49 sec
-
10
Turn right onto Winfield Road
936 ft · 26 sec · Winfield Road
-
11
Turn left onto West Diehl Road
1.1 km · 1 min · West Diehl Road
-
12
Turn right onto Mill Street
1.1 mi · 2 min · Mill Street
-
13
Turn left onto West Ogden Avenue
1972 ft · 49 sec · West Ogden Avenue
-
14
Turn left onto North Washington Street
15 m · 1 sec · North Washington Street
-
15
Arrive at your destination
0 m · 1 sec · North Washington Street
Car Route Details
A richer read on the saved driving route between Flagg and Naperville.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Ronald Reagan Memorial Tollway
Merge slight left onto Ronald Reagan Memorial Tollway
48.3 mi · 00h 53m
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 Flagg and Sunny near Naperville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Flagg to Naperville?
The road trip is about 58.2 miles (93.7 km) and usually takes 01h 03m 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?
Maple Park is a useful midpoint, sitting about 29.1 miles from Flagg and 29.1 miles from Naperville.
How much longer is the road route than the straight-line distance?
The direct path is about 51.7 miles (83.2 km), while the road route adds roughly 6.5 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:24 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.73 one way or $15.46 round trip. Estimated CO2 is about 18.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Flagg and Sunny near Naperville.
Stop Ideas Near Maple Park
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 Maple Park.
Plano
Naperville
Rockford, Illinois
Mendota station
Flight Path Map
This map shows the direct air route between Flagg and Naperville. Straight-line distance: 51.71 mi (83.22 km).
#1 Flagg
City in Illinois, United States of America
| Population | 12,745 |
| Coordinates | 41.8958600, -89.1409300 |
| Altitude | 238 |
| Country | United States |
#2 Naperville
The second most populous city in Illinois.
| Population | 147,986 |
| Coordinates | 41.7858600, -88.1472900 |
| Altitude | 216 |
| Country | United States |
End: North Washington Street (-88.147302, 41.785837)
Estimated Travel Time
Distance: 94 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 56m |
| 40 mph (64.37 km/h) | 01h 27m |
| 50 mph (80.47 km/h) | 01h 09m |
| 60 mph (96.56 km/h) | 00h 58m |
| 70 mph (112.65 km/h) | 00h 49m |
| 80 mph (129 km/h) | 00h 43m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.73 | $15.46 |
| Mid-grade | $4.25 | $8.72 | $17.44 |
| Premium | $4.65 | $9.54 | $19.08 |
| Diesel | $5.30 | $10.87 | $21.75 |
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.