How far is Rockford, IL from Lacon, IL?
The driving distance from Rockford, IL to Lacon, IL is about 115.9 miles (186.5 km), with a travel time of about 02h 11m by car.
- The straight-line flight distance is about 87.7 miles (141.1 km).
- For a round trip, plan for roughly 04h 23m 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 11m.
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 Rockford and Lacon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rockford and Lacon.
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1
Start on West State Street
546 ft · 23 sec · West State Street
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2
Turn left onto South Church Street
1519 ft · 37 sec · South Church Street
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3
Turn left onto Cedar Street
84 m · 5 sec · Cedar Street
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4
Turn right onto South Main Street
3.6 mi · 6 min · South Main Street
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5
Take the ramp left
1707 ft · 44 sec
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6
Merge slight left onto U.S. Grant Memorial Highway
4.3 mi · 5 min · U.S. Grant Memorial Highway
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7
Take the exit slight right
1.2 km · 2 min
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8
Merge slight right
59.3 mi · 1 hr 4 min
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9
Take the exit slight right toward I 80 West: La Salle-Peru, Des Moines
1 km · 58 sec
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10
Merge slight left
16.7 mi · 18 min
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11
Take the exit slight right toward I 180 South: Hennepin
1 mi · 2 min
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12
Continue straight
8.7 mi · 9 min
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13
Keep slight right to continue on Peoria
2.1 mi · 2 min
-
14
Continue straight
16.5 mi · 19 min
-
15
Turn left onto Ferry Street
1.5 mi · 2 min · Ferry Street
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16
Arrive at your destination
0 m · 1 sec · 5th Street
Car Route Details
A richer read on the saved driving route between Rockford and Lacon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
U.S. Grant Memorial Highway
Merge slight right
59.3 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 Rockford and Mostly Sunny near Lacon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rockford to Lacon?
The road trip is about 115.9 miles (186.5 km) and usually takes 02h 11m 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?
Mendota is a useful midpoint, sitting about 58 miles from Rockford and 57.9 miles from Lacon.
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 28.2 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 2:06 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.42 one way or $30.85 round trip. Estimated CO2 is about 36.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Rockford and Mostly Sunny near Lacon.
Stop Ideas Near Mendota
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 Mendota.
Mendota station
Princeton
Plano
Kewanee
Flight Path Map
This map shows the direct air route between Rockford and Lacon. Straight-line distance: 87.66 mi (141.07 km).
#1 Rockford
The second most populous city in Illinois.
| Population | 144,835 |
| Coordinates | 42.2711300, -89.0940000 |
| Altitude | 218 |
| Country | United States |
#2 Lacon
City in Marshall County, Illinois, United States
| Population | 1,713 |
| Coordinates | 41.0247600, -89.4112000 |
| Altitude | 145 |
| Country | United States |
End: Lacon (-89.4112, 41.02476)
Estimated Travel Time
Distance: 186 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 51m |
| 40 mph (64.37 km/h) | 02h 53m |
| 50 mph (80.47 km/h) | 02h 19m |
| 60 mph (96.56 km/h) | 01h 55m |
| 70 mph (112.65 km/h) | 01h 39m |
| 80 mph (129 km/h) | 01h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $15.42 | $30.85 |
| Mid-grade | $4.25 | $17.39 | $34.79 |
| Premium | $4.65 | $19.03 | $38.07 |
| Diesel | $5.30 | $21.69 | $43.39 |
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.