How far is Chicago, IL from Big Rock, IL?
The driving distance from Chicago, IL to Big Rock, IL is about 51.6 miles (83 km), with a travel time of about 01h 10m by car.
- The straight-line flight distance is about 46.6 miles (75 km).
- For a round trip, plan for roughly 02h 20m 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 10m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Snow Showers then Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Chicago and Big Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between Chicago and Big Rock.
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1
Start on the route
943 ft · 1 min
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2
At the end of the road, turn left onto West Cermak Road
1.3 km · 2 min · West Cermak Road
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3
Turn right onto South Ashland Avenue
1.7 mi · 3 min · South Ashland Avenue
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4
Turn left onto West Van Buren Street
900 ft · 29 sec · West Van Buren Street
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5
Take the ramp slight left toward I 290 West
650 ft · 16 sec
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6
Merge slight left onto Eisenhower Expressway
12.1 mi · 16 min · Eisenhower Expressway
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7
Keep slight left to continue on Ronald Reagan Memorial Tollway
1.9 mi · 2 min · Ronald Reagan Memorial Tollway
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8
Keep slight right to continue on Ronald Reagan Memorial Tollway
25.1 mi · 30 min · Ronald Reagan Memorial Tollway
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9
Keep slight right to continue on IL 56 West: Sugar Grove
4.2 mi · 6 min
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10
Continue straight
5.4 mi · 8 min
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11
Turn left
14 m · 4 sec
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12
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Chicago and Big Rock.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Ronald Reagan Memorial Tollway
Keep slight right to continue on Ronald Reagan Memorial Tollway
25.1 mi · 00h 30m
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.
Slight Chance Snow Showers then Mostly Sunny leaving Chicago and Sunny near Big Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Chicago to Big Rock?
The road trip is about 51.6 miles (83 km) and usually takes 01h 10m 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?
Lisle is a useful midpoint, sitting about 25.7 miles from Chicago and 25.8 miles from Big Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 46.6 miles (75 km), while the road route adds roughly 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 4:10 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.86 one way or $13.73 round trip. Estimated CO2 is about 16.2 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Snow Showers then Mostly Sunny around Chicago and Sunny near Big Rock.
Stop Ideas Near Lisle
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 Lisle.
Naperville
La Grange Road
Summit
Joliet Transportation Center
Flight Path Map
This map shows the direct air route between Chicago and Big Rock. Straight-line distance: 46.58 mi (74.96 km).
#1 Chicago
The third most populous city in the United States and the center of the Chicago metropolitan area.
| Population | 2,677,643 |
| Coordinates | 41.850033, -87.6500523 |
| Altitude | 179 |
| Country | United States |
#2 Big Rock
Village in Kane County, Illinois, United States
| Population | 1,121 |
| Coordinates | 41.7639200, -88.5470200 |
| Altitude | 216 |
| Country | United States |
End: Big Rock (-88.54702, 41.76392)
Estimated Travel Time
Distance: 83 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 43m |
| 40 mph (64.37 km/h) | 01h 17m |
| 50 mph (80.47 km/h) | 01h 01m |
| 60 mph (96.56 km/h) | 00h 51m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $6.86 | $13.73 |
| Mid-grade | $4.25 | $7.74 | $15.48 |
| Premium | $4.65 | $8.47 | $16.94 |
| Diesel | $5.30 | $9.65 | $19.31 |
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.