How far is Knox, IL from Rockford, IL?
The driving distance from Knox, IL to Rockford, IL is about 155.7 miles (250.6 km), with a travel time of about 02h 29m by car.
- The straight-line flight distance is about 110.1 miles (177.2 km).
- For a round trip, plan for roughly 04h 59m 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 29m.
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 Livingston County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Chance Showers And Thunderstorms
Chance Rain
Driving Route Map
The map below follows the saved road route between Knox and Rockford.
Turn-by-Turn Driving Directions
Step-by-step road directions between Knox and Rockford.
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1
Start on Knox Station Road
45 m · 10 sec · Knox Station Road
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2
Turn left onto Mine Road
2682 ft · 2 min · Mine Road
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3
Turn right onto Knox Road 1020 E
1.4 mi · 5 min · Knox Road 1020 E
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4
Take the ramp right toward I 74 West: Galesburg
1921 ft · 47 sec
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5
Merge slight left
39.3 mi · 42 min
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6
Keep slight left to continue on Chicago-Kansas City Expressway
6.3 mi · 7 min · Chicago-Kansas City Expressway
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7
Take the exit slight right toward I 88 East, IL 92 East: Sterling, Rock Falls
78.8 mi · 1 hr 25 min
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8
Take the exit slight right toward I 39 North, US 51 North: Rockford
2271 ft · 1 min
-
9
Merge slight left
21.5 mi · 23 min
-
10
Take the exit slight left toward US 20 West: Freeport, Rockford
1.1 mi · 2 min
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11
Merge slight left onto U.S. Grant Memorial Highway
4.7 mi · 5 min · U.S. Grant Memorial Highway
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12
Take the exit slight right toward IL 2: Rockford, Dixon
1810 ft · 44 sec
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13
Keep slight right
86 m · 7 sec
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14
Turn straight onto South Main Street
3.7 mi · 6 min · South Main Street
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15
Turn right onto West State Street
45 m · 4 sec · West State Street
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16
Arrive at your destination
0 m · 1 sec · West State Street
Car Route Details
A richer read on the saved driving route between Knox 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 88 East
Take the exit slight right toward I 88 East, IL 92 East: Sterling, Rock Falls
78.8 mi · 01h 25m
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.
Partly Sunny then Chance Showers And Thunderstorms leaving Knox and Chance Rain near Rockford.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Knox to Rockford?
The road trip is about 155.7 miles (250.6 km) and usually takes 02h 29m 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?
Round Grove is a useful midpoint, sitting about 79.2 miles from Knox and 76.5 miles from Rockford.
How much longer is the road route than the straight-line distance?
The direct path is about 110.1 miles (177.2 km), while the road route adds roughly 45.6 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 1:30 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.70 one way or $41.41 round trip. Estimated CO2 is about 48.8 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Chance Showers And Thunderstorms around Knox and Chance Rain near Rockford.
Stop Ideas Near Round Grove
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 Round Grove.
Princeton
Kewanee
Moline, Illinois
Rock Island, IL
Flight Path Map
This map shows the direct air route between Knox and Rockford. Straight-line distance: 110.13 mi (177.24 km).
#1 Knox
County seat of Knox County, Tennessee, United States; third-largest city in Tennessee
| Population | 2,692 |
| Coordinates | 40.9342000, -90.2548500 |
| Altitude | 201 |
| 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: 251 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 11m |
| 40 mph (64.37 km/h) | 03h 53m |
| 50 mph (80.47 km/h) | 03h 06m |
| 60 mph (96.56 km/h) | 02h 35m |
| 70 mph (112.65 km/h) | 02h 13m |
| 80 mph (129 km/h) | 01h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $20.70 | $41.41 |
| Mid-grade | $4.25 | $23.35 | $46.70 |
| Premium | $4.65 | $25.55 | $51.10 |
| Diesel | $5.30 | $29.12 | $58.24 |
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 · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.