How far is Monmouth, IL from Elgin, IL?
The driving distance from Monmouth, IL to Elgin, IL is about 202.4 miles (325.7 km), with a travel time of about 03h 04m by car.
- The straight-line flight distance is about 145.1 miles (233.5 km).
- For a round trip, plan for roughly 06h 08m 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 04m.
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.
Township in Livingston County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Monmouth and Elgin.
Turn-by-Turn Driving Directions
Step-by-step road directions between Monmouth and Elgin.
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1
Start on South 1st Street
65 m · 15 sec · South 1st Street
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2
Turn left onto East Broadway
89 m · 8 sec · East Broadway
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3
Enter the roundabout and take exit 1 toward Public Square
5 m · 1 sec · North Main Street
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4
Exit the rotary onto North Main Street
1.4 km · 2 min · North Main Street
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5
Take the ramp slight right
84 m · 8 sec
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6
Merge slight left onto Chicago-Kansas City Expressway
18.9 mi · 22 min · Chicago-Kansas City Expressway
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7
Keep slight right to continue on Chicago-Kansas City Expressway
31.9 mi · 35 min · Chicago-Kansas City Expressway
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8
Keep slight left to continue on Chicago-Kansas City Expressway
6.3 mi · 7 min · Chicago-Kansas City Expressway
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9
Take the exit slight right toward I 88 East, IL 92 East: Sterling, Rock Falls
94.2 mi · 1 hr 41 min
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10
Take the exit slight right toward DeKalb, Sycamore
1739 ft · 49 sec
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11
Keep slight right
50 m · 6 sec
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12
Turn straight onto Peace Road
1.6 mi · 3 min · Peace Road
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13
Turn right onto East Lincoln Highway
16.6 mi · 23 min · East Lincoln Highway
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14
Turn left onto LaFox Road
2.3 mi · 4 min · LaFox Road
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15
Continue on Burlington Road
1513 ft · 31 sec · Burlington Road
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16
Enter the roundabout and take exit 1 toward Bolcum Road
7 m · 1 sec · Bolcum Road
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17
Exit the roundabout onto Bolcum Road
3.2 mi · 5 min · Bolcum Road
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18
Turn left onto Randall Road
1.3 km · 1 min · Randall Road
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19
Turn right onto Silver Glen Road
1.5 km · 2 min · Silver Glen Road
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20
At the end of the road, turn left
6.1 mi · 11 min
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21
Turn right onto East Chicago Street
1719 ft · 55 sec · East Chicago Street
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22
Arrive at your destination
0 m · 1 sec · East Chicago Street
Car Route Details
A richer read on the saved driving route between Monmouth and Elgin.
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 88 East
Take the exit slight right toward I 88 East, IL 92 East: Sterling, Rock Falls
94.2 mi · 01h 41m
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.
Sunny leaving Monmouth and Sunny near Elgin.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Monmouth to Elgin?
The road trip is about 202.4 miles (325.7 km) and usually takes 03h 04m 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?
Round Grove is a useful midpoint, sitting about 92.4 miles from Monmouth and 110 miles from Elgin.
How much longer is the road route than the straight-line distance?
The direct path is about 145.1 miles (233.5 km), while the road route adds roughly 57.3 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 10:52 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $26.92 one way or $53.85 round trip. Estimated CO2 is about 63.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Monmouth and Sunny near Elgin.
Stop Ideas Near Round Grove
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 Round Grove.
Princeton
Kewanee
Moline, Illinois
Rock Island, IL
Flight Path Map
This map shows the direct air route between Monmouth and Elgin. Straight-line distance: 145.1 mi (233.51 km).
#1 Monmouth
City in Warren County, Illinois, United States
| Population | 8,801 |
| Coordinates | 40.9114300, -90.6473600 |
| Altitude | 232 |
| Country | United States |
#2 Elgin
The second most populous city in Kane County, Illinois.
| Population | 110,196 |
| Coordinates | 42.0372500, -88.2811900 |
| Altitude | 227 |
| Country | United States |
End: East Chicago Street (-88.281194, 42.037244)
Estimated Travel Time
Distance: 326 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 44m |
| 40 mph (64.37 km/h) | 05h 03m |
| 50 mph (80.47 km/h) | 04h 02m |
| 60 mph (96.56 km/h) | 03h 22m |
| 70 mph (112.65 km/h) | 02h 53m |
| 80 mph (129 km/h) | 02h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $26.92 | $53.85 |
| Mid-grade | $4.25 | $30.37 | $60.73 |
| Premium | $4.65 | $33.23 | $66.46 |
| Diesel | $5.30 | $37.87 | $75.74 |
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.