How far is Naperville, IL from Harristown, IL?
The driving distance from Naperville, IL to Harristown, IL is about 168.1 miles (270.6 km), with a travel time of about 03h 24m by car.
- The straight-line flight distance is about 142.2 miles (228.8 km).
- For a round trip, plan for roughly 06h 48m 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 24m.
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.
City in Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Naperville and Harristown.
Turn-by-Turn Driving Directions
Step-by-step road directions between Naperville and Harristown.
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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
105.9 mi · 1 hr 55 min
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6
Keep slight left to continue on I 74 East, US 51 South, US 55 Business North: Indianapolis, Decatur
2.1 mi · 2 min
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7
Take the exit slight right toward US 51 South, US 51 Business North: Decatur, Bloomington
1616 ft · 40 sec
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8
Continue on North 1450 East Road
14.7 mi · 18 min · North 1450 East Road
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9
Continue on North Walnut Street
22.8 mi · 29 min · North Walnut Street
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10
Take the exit slight right toward I 72 West: Springfield, Pana
2502 ft · 1 min
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11
Merge slight left
7 mi · 8 min
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12
Take the exit slight left toward US 36 East, US 51 South: Decatur, Pana
2607 ft · 1 min
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13
Keep slight right to continue on US 36 East: Decatur
2375 ft · 1 min
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14
Merge slight left
1.1 km · 46 sec
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15
Turn left onto West Harristown Boulevard
2.7 mi · 5 min · West Harristown Boulevard
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16
Turn right onto North Meridian Street
2665 ft · 1 min · North Meridian Street
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17
Turn right
692 ft · 31 sec
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18
Arrive at your destination
0 m · 1 sec · Snyder Street
Car Route Details
A richer read on the saved driving route between Naperville and Harristown.
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
106 mi · 01h 55m
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.
Mostly Sunny leaving Naperville and Mostly Sunny near Harristown.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Naperville to Harristown?
The road trip is about 168.1 miles (270.6 km) and usually takes 03h 24m 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 84.1 miles from Naperville and 84.1 miles from Harristown.
How much longer is the road route than the straight-line distance?
The direct path is about 142.2 miles (228.8 km), while the road route adds roughly 25.9 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 10:12 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $22.36 one way or $44.72 round trip. Estimated CO2 is about 52.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Naperville and Mostly Sunny near Harristown.
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 Naperville and Harristown. Straight-line distance: 142.18 mi (228.82 km).
#1 Naperville
The second most populous city in Illinois.
| Population | 147,986 |
| Coordinates | 41.7858600, -88.1472900 |
| Altitude | 216 |
| Country | United States |
#2 Harristown
Village in the United States
| Population | 1,278 |
| Coordinates | 39.8539300, -89.0839700 |
| Altitude | 210 |
| Country | United States |
End: Harristown (-89.08397, 39.85393)
Estimated Travel Time
Distance: 271 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 36m |
| 40 mph (64.37 km/h) | 04h 12m |
| 50 mph (80.47 km/h) | 03h 21m |
| 60 mph (96.56 km/h) | 02h 48m |
| 70 mph (112.65 km/h) | 02h 24m |
| 80 mph (129 km/h) | 02h 05m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $22.36 | $44.72 |
| Mid-grade | $4.25 | $25.22 | $50.44 |
| Premium | $4.65 | $27.60 | $55.20 |
| Diesel | $5.30 | $31.45 | $62.91 |
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.