How far is Marengo, IL from Algonquin, IL?
The driving distance from Marengo, IL to Algonquin, IL is about 19.4 miles (31.3 km), with a travel time of about 00h 34m by car.
- The straight-line flight distance is about 17.1 miles (27.5 km).
- For a round trip, plan for roughly 01h 09m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 34m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 McHenry and Kane counties, Illinois, United States
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 Marengo and Algonquin.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marengo and Algonquin.
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1
Start on South State Street
33 m · 7 sec · South State Street
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2
Turn left onto East Grant Highway
4.4 mi · 6 min · East Grant Highway
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3
Enter the roundabout and take exit 3 toward Marengo Road
92 m · 6 sec · Marengo Road
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4
Exit the roundabout onto Marengo Road
5.7 mi · 8 min · Marengo Road
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5
Turn left onto West Main Street Road
1.5 mi · 2 min · West Main Street Road
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6
Turn left
2681 ft · 1 min
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7
Turn right onto Algonquin Road
7.2 mi · 13 min · Algonquin Road
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8
Turn right onto South Main Street
804 ft · 32 sec · South Main Street
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9
Turn right onto Washington Street
24 m · 3 sec · Washington Street
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10
Arrive at your destination
0 m · 1 sec · Washington Street
Car Route Details
A richer read on the saved driving route between Marengo and Algonquin.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Algonquin Road
Turn right onto Algonquin Road
7.2 mi · 00h 13m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving Marengo and Sunny near Algonquin.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marengo to Algonquin?
The road trip is about 19.4 miles (31.3 km) and usually takes 00h 34m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Huntley is a useful midpoint, sitting about 9.8 miles from Marengo and 9.8 miles from Algonquin.
How much longer is the road route than the straight-line distance?
The direct path is about 17.1 miles (27.5 km), while the road route adds roughly 2.3 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:20 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.60 one way or $5.20 round trip. Estimated CO2 is about 6.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Marengo and Sunny near Algonquin.
Stop Ideas Near Huntley
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 Huntley.
Rockford, Illinois
Naperville
Glenview station
Plano
Flight Path Map
This map shows the direct air route between Marengo and Algonquin. Straight-line distance: 17.08 mi (27.48 km).
#1 Marengo
City in McHenry County, Illinois, United States
| Population | 7,377 |
| Coordinates | 42.2486300, -88.6084300 |
| Altitude | 254 |
| Country | United States |
#2 Algonquin
Village in Illinois
| Population | 30,730 |
| Coordinates | 42.1655800, -88.2942500 |
| Altitude | 226 |
| Country | United States |
End: Washington Street (-88.294145, 42.165674)
Estimated Travel Time
Distance: 31 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 38m |
| 40 mph (64.37 km/h) | 00h 29m |
| 50 mph (80.47 km/h) | 00h 23m |
| 60 mph (96.56 km/h) | 00h 19m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $2.60 | $5.20 |
| Mid-grade | $4.25 | $2.93 | $5.87 |
| Premium | $4.65 | $3.21 | $6.42 |
| Diesel | $5.30 | $3.66 | $7.32 |
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.