How far is Somonauk, IL from Peoria, IL?
The driving distance from Somonauk, IL to Peoria, IL is about 102.5 miles (165 km), with a travel time of about 01h 52m by car.
- The straight-line flight distance is about 80.3 miles (129.2 km).
- For a round trip, plan for roughly 03h 44m 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 52m.
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.
Village in Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Somonauk and Peoria.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somonauk and Peoria.
-
1
Start on West Church Street
17.4 mi · 26 min · West Church Street
-
2
Continue on East 9th Road
2317 ft · 39 sec · East 9th Road
-
3
Continue on North 44th Road
4.5 mi · 7 min · North 44th Road
-
4
Take the ramp left toward I 39 South, US 51 South: LaSalle, Peru
1699 ft · 41 sec
-
5
Merge slight left
12.3 mi · 13 min
-
6
Take the exit slight right toward I 80 West: La Salle-Peru, Des Moines
1 km · 58 sec
-
7
Merge slight left
16.7 mi · 18 min
-
8
Take the exit slight right toward I 180 South: Hennepin
1 mi · 2 min
-
9
Continue straight
8.7 mi · 9 min
-
10
Keep slight right to continue on Peoria
2.1 mi · 2 min
-
11
Continue straight
32.6 mi · 39 min
-
12
Continue on North Galena Road
7.3 mi · 11 min · North Galena Road
-
13
Continue on Northeast Adams Street
1.2 mi · 2 min · Northeast Adams Street
-
14
Continue on Northeast Jefferson Avenue
1.7 mi · 3 min · Northeast Jefferson Avenue
-
15
Arrive at your destination
0 m · 1 sec · Northeast Jefferson Avenue
Car Route Details
A richer read on the saved driving route between Somonauk and Peoria.
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 180 South
Continue straight
32.6 mi · 00h 39m
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.
Mostly Sunny leaving Somonauk and Partly Sunny near Peoria.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somonauk to Peoria?
The road trip is about 102.5 miles (165 km) and usually takes 01h 52m 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?
Malden is a useful midpoint, sitting about 53.4 miles from Somonauk and 49.2 miles from Peoria.
How much longer is the road route than the straight-line distance?
The direct path is about 80.3 miles (129.2 km), while the road route adds roughly 22.2 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 2:46 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.65 one way or $27.30 round trip. Estimated CO2 is about 32.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Somonauk and Partly Sunny near Peoria.
Stop Ideas Near Malden
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 Malden.
Princeton
Mendota station
Kewanee
Plano
Flight Path Map
This map shows the direct air route between Somonauk and Peoria. Straight-line distance: 80.3 mi (129.23 km).
#1 Somonauk
City in Illinois, United States of America
| Population | 1,860 |
| Coordinates | 41.6336400, -88.6811900 |
| Altitude | 209 |
| Country | United States |
#2 Peoria
The third most populous city in Illinois.
| Population | 109,428 |
| Coordinates | 40.6936500, -89.5889900 |
| Altitude | 153 |
| Country | United States |
End: Northeast Jefferson Avenue (-89.589088, 40.693742)
Estimated Travel Time
Distance: 165 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 24m |
| 40 mph (64.37 km/h) | 02h 33m |
| 50 mph (80.47 km/h) | 02h 03m |
| 60 mph (96.56 km/h) | 01h 42m |
| 70 mph (112.65 km/h) | 01h 27m |
| 80 mph (129 km/h) | 01h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $13.65 | $27.30 |
| Mid-grade | $4.25 | $15.40 | $30.79 |
| Premium | $4.65 | $16.85 | $33.69 |
| Diesel | $5.30 | $19.20 | $38.40 |
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 · May 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.