How far is Lacon, IL from Rockford, IL?
The driving distance from Lacon, IL to Rockford, IL is about 108.3 miles (174.3 km), with a travel time of about 01h 50m by car.
- The straight-line flight distance is about 87.7 miles (141.1 km).
- For a round trip, plan for roughly 03h 40m 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 50m.
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.
Township in LaSalle County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Lacon and Rockford.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lacon and Rockford.
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1
Start on 5th Street
1.4 mi · 2 min · 5th Street
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2
Take the ramp right toward Railroad Street
3267 ft · 57 sec · Railroad Street
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3
Continue on County Road 1400 East
17.8 mi · 20 min · County Road 1400 East
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4
Merge slight right
8.9 mi · 10 min
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5
Keep slight right to continue on I 80 East: Joliet
2040 ft · 44 sec
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6
Merge slight left
17.4 mi · 19 min
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7
Take the exit slight right toward I 39 North, US 51 North: Rockford
2555 ft · 1 min
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8
Merge slight left
59.8 mi · 1 hr 4 min
-
9
Take the exit slight left toward US 20 West: Freeport, Rockford
1.1 mi · 2 min
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10
Merge slight left onto U.S. Grant Memorial Highway
4.7 mi · 5 min · U.S. Grant Memorial Highway
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11
Take the exit slight right toward IL 2: Rockford, Dixon
1810 ft · 44 sec
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12
Keep slight right
86 m · 7 sec
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13
Turn straight onto South Main Street
3.7 mi · 6 min · South Main Street
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14
Turn right onto West State Street
45 m · 4 sec · West State Street
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15
Arrive at your destination
0 m · 1 sec · West State Street
Car Route Details
A richer read on the saved driving route between Lacon and Rockford.
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 39 North
Merge slight left
59.8 mi · 01h 04m
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 Lacon and Mostly Sunny near Rockford.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lacon to Rockford?
The road trip is about 108.3 miles (174.3 km) and usually takes 01h 50m 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?
Meriden is a useful midpoint, sitting about 58.3 miles from Lacon and 50 miles from Rockford.
How much longer is the road route than the straight-line distance?
The direct path is about 87.7 miles (141.1 km), while the road route adds roughly 20.6 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 2:50 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.41 one way or $28.81 round trip. Estimated CO2 is about 33.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Lacon and Mostly Sunny near Rockford.
Stop Ideas Near Meriden
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 Meriden.
Mendota station
Princeton
Plano
Dwight station
Flight Path Map
This map shows the direct air route between Lacon and Rockford. Straight-line distance: 87.66 mi (141.07 km).
#1 Lacon
City in Marshall County, Illinois, United States
| Population | 1,713 |
| Coordinates | 41.0247600, -89.4112000 |
| Altitude | 145 |
| Country | United States |
#2 Rockford
The second most populous city in Illinois.
| Population | 144,835 |
| Coordinates | 42.2711300, -89.0940000 |
| Altitude | 218 |
| Country | United States |
End: West State Street (-89.094046, 42.271066)
Estimated Travel Time
Distance: 174 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 36m |
| 40 mph (64.37 km/h) | 02h 42m |
| 50 mph (80.47 km/h) | 02h 09m |
| 60 mph (96.56 km/h) | 01h 48m |
| 70 mph (112.65 km/h) | 01h 32m |
| 80 mph (129 km/h) | 01h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $14.41 | $28.81 |
| Mid-grade | $4.25 | $16.25 | $32.49 |
| Premium | $4.65 | $17.78 | $35.56 |
| Diesel | $5.30 | $20.26 | $40.52 |
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.