How far is Naperville, IL from Alton, IL?
The driving distance from Naperville, IL to Alton, IL is about 263.6 miles (424.3 km), with a travel time of about 05h 06m by car.
- The straight-line flight distance is about 227 miles (365.3 km).
- For a round trip, plan for roughly 10h 13m 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 05h 06m.
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 Logan County, Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Naperville and Alton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Naperville and Alton.
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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 right to continue on I 55 South: Saint Louis, Springfield
64.8 mi · 1 hr 10 min
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7
Keep slight left to continue on I 55 South: Saint Louis
62.6 mi · 1 hr 7 min
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8
Take the exit slight right toward IL 140: Alton, Greenville
1756 ft · 43 sec
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9
Turn right onto East State Street
1 km · 1 min · East State Street
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10
Continue on State Route 140
9.6 mi · 13 min · State Route 140
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11
Continue on East Bethalto Drive
1.8 mi · 4 min · East Bethalto Drive
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12
Continue on East MacArthur Drive
1.4 mi · 3 min · East MacArthur Drive
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13
Continue on West Macarthur Drive
1.3 mi · 2 min · West Macarthur Drive
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14
Continue on College Avenue
3.6 mi · 6 min · College Avenue
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15
Enter the roundabout and take exit 3 toward College Avenue
121 m · 8 sec · College Avenue
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16
Exit the roundabout onto College Avenue
1355 ft · 27 sec · College Avenue
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17
Turn left onto Martin Luther King Drive
1.5 km · 1 min · Martin Luther King Drive
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18
Continue on Piasa Street
1877 ft · 37 sec · Piasa Street
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19
Turn left onto West 3rd Street
662 ft · 31 sec · West 3rd Street
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20
Turn right onto Alby Street
36 m · 5 sec · Alby Street
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21
Arrive at your destination
0 m · 1 sec · Alby Street
Car Route Details
A richer read on the saved driving route between Naperville and Alton.
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.
Partly Sunny leaving Naperville and Mostly Sunny then Chance Showers And Thunderstorms near Alton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Naperville to Alton?
The road trip is about 263.6 miles (424.3 km) and usually takes 05h 06m 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?
Atlanta is a useful midpoint, sitting about 131.9 miles from Naperville and 131.8 miles from Alton.
How much longer is the road route than the straight-line distance?
The direct path is about 227 miles (365.3 km), while the road route adds roughly 36.6 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 6:46 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.07 one way or $70.14 round trip. Estimated CO2 is about 82.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Naperville and Mostly Sunny then Chance Showers And Thunderstorms near Alton.
Stop Ideas Near Atlanta
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Route 66 Original Alignment- Driveable!
City of Lincoln
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Atlanta.
Lincoln
Uptown Station
Peoria, Illinois
Springfield station
Flight Path Map
This map shows the direct air route between Naperville and Alton. Straight-line distance: 226.97 mi (365.28 km).
#1 Naperville
The second most populous city in Illinois.
| Population | 147,986 |
| Coordinates | 41.7858600, -88.1472900 |
| Altitude | 216 |
| Country | United States |
#2 Alton
City in Madison County, Illinois, United States
| Population | 26,049 |
| Coordinates | 38.8906000, -90.1842800 |
| Altitude | 150 |
| Country | United States |
End: Alton (-90.18428, 38.8906)
Estimated Travel Time
Distance: 424 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 47m |
| 40 mph (64.37 km/h) | 06h 35m |
| 50 mph (80.47 km/h) | 05h 16m |
| 60 mph (96.56 km/h) | 04h 23m |
| 70 mph (112.65 km/h) | 03h 45m |
| 80 mph (129 km/h) | 03h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $35.07 | $70.14 |
| Mid-grade | $4.25 | $39.55 | $79.11 |
| Premium | $4.65 | $43.28 | $86.56 |
| Diesel | $5.30 | $49.33 | $98.65 |
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 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.