How far is Markham, IL from Green Rock, IL?
The driving distance from Markham, IL to Green Rock, IL is about 148.4 miles (238.9 km), with a travel time of about 02h 46m by car.
- The straight-line flight distance is about 137.9 miles (222 km).
- For a round trip, plan for roughly 05h 33m 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 02h 46m.
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 also known as Utica, in LaSalle County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Markham and Green Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Markham and Green Rock.
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1
Start on 163rd Street
20 m · 7 sec · 163rd Street
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2
Turn right onto Kedzie Avenue
2913 ft · 1 min · Kedzie Avenue
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3
Take the ramp slight right toward I 80 West
2482 ft · 1 min
-
4
Merge slight left
143.5 mi · 2 hr 38 min
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5
Keep slight right to continue on I 80 West: Davenport
1.1 mi · 1 min
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6
Take the exit slight right toward US 6
1350 ft · 38 sec
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7
Turn left
1.2 mi · 2 min
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8
Turn right
1.2 mi · 2 min
-
9
Turn right onto 7th Avenue
16 m · 4 sec · 7th Avenue
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10
Turn right onto Green Park Avenue
27 m · 4 sec · Green Park Avenue
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11
Arrive at your destination
0 m · 1 sec · Green Park Avenue
Car Route Details
A richer read on the saved driving route between Markham and Green Rock.
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 80 West
Merge slight left
144 mi · 02h 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 Markham and Sunny near Green Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Markham to Green Rock?
The road trip is about 148.4 miles (238.9 km) and usually takes 02h 46m 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?
Utica is a useful midpoint, sitting about 74.1 miles from Markham and 74.4 miles from Green Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 137.9 miles (222 km), while the road route adds roughly 10.5 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 12:56 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.76 one way or $39.52 round trip. Estimated CO2 is about 46.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Markham and Sunny near Green Rock.
Stop Ideas Near Utica
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 Utica.
Mendota station
Princeton
Plano
Dwight station
Flight Path Map
This map shows the direct air route between Markham and Green Rock. Straight-line distance: 137.98 mi (222.05 km).
#1 Markham
A city located in Cook County, Illinois.
| Population | 13,400 |
| Coordinates | 41.5936500, -87.6947700 |
| Altitude | 189 |
| Country | United States |
#2 Green Rock
City in Illinois, United States of America
| Population | 2,970 |
| Coordinates | 41.4730900, -90.3576300 |
| Altitude | 182 |
| Country | United States |
End: Green Rock (-90.35763, 41.47309)
Estimated Travel Time
Distance: 239 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 56m |
| 40 mph (64.37 km/h) | 03h 42m |
| 50 mph (80.47 km/h) | 02h 58m |
| 60 mph (96.56 km/h) | 02h 28m |
| 70 mph (112.65 km/h) | 02h 07m |
| 80 mph (129 km/h) | 01h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $19.76 | $39.52 |
| Mid-grade | $4.25 | $22.29 | $44.57 |
| Premium | $4.65 | $24.39 | $48.77 |
| Diesel | $5.30 | $27.79 | $55.59 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.