How far is Port Byron, IL from Rockford, IL?
The driving distance from Port Byron, IL to Rockford, IL is about 108.6 miles (174.8 km), with a travel time of about 01h 45m by car.
- The straight-line flight distance is about 78.6 miles (126.5 km).
- For a round trip, plan for roughly 03h 31m 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 45m.
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 Lee County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Port Byron and Rockford.
Turn-by-Turn Driving Directions
Step-by-step road directions between Port Byron and Rockford.
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1
Start on Cherry Street
25 m · 9 sec · Cherry Street
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2
Turn left onto South High Street
2748 ft · 48 sec · South High Street
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3
Turn right onto Agnes Street
2703 ft · 1 min · Agnes Street
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4
Continue on 94th Avenue North
7.2 mi · 17 min · 94th Avenue North
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5
Turn sharp right onto Moline Road
1777 ft · 53 sec · Moline Road
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6
Take the ramp slight right
1378 ft · 34 sec
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7
Merge slight left onto Ronald Reagan Memorial Highway
33.2 mi · 36 min · Ronald Reagan Memorial Highway
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8
Continue on Ronald Reagan Memorial Tollway
34.8 mi · 37 min · Ronald Reagan Memorial Tollway
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9
Take the exit slight right toward I 39 North, US 51 North: Rockford
2271 ft · 1 min
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10
Merge slight left
21.5 mi · 23 min
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11
Take the exit slight left toward US 20 West: Freeport, Rockford
1.1 mi · 2 min
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12
Merge slight left onto U.S. Grant Memorial Highway
4.7 mi · 5 min · U.S. Grant Memorial Highway
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13
Take the exit slight right toward IL 2: Rockford, Dixon
1810 ft · 44 sec
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14
Keep slight right
86 m · 7 sec
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15
Turn straight onto South Main Street
3.7 mi · 6 min · South Main Street
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16
Turn right onto West State Street
45 m · 4 sec · West State Street
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17
Arrive at your destination
0 m · 1 sec · West State Street
Car Route Details
A richer read on the saved driving route between Port Byron 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.
Ronald Reagan Memorial Tollway
Continue on Ronald Reagan Memorial Tollway
34.8 mi · 00h 37m
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 Cloudy leaving Port Byron and Mostly Cloudy near Rockford.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Port Byron to Rockford?
The road trip is about 108.6 miles (174.8 km) and usually takes 01h 45m 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?
Nachusa is a useful midpoint, sitting about 54.2 miles from Port Byron and 54.4 miles from Rockford.
How much longer is the road route than the straight-line distance?
The direct path is about 78.6 miles (126.5 km), while the road route adds roughly 30 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 2:58 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.44 one way or $28.89 round trip. Estimated CO2 is about 34 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Port Byron and Mostly Cloudy near Rockford.
Stop Ideas Near Nachusa
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 Nachusa.
Mendota station
Princeton
Rockford, Illinois
Plano
Flight Path Map
This map shows the direct air route between Port Byron and Rockford. Straight-line distance: 78.61 mi (126.51 km).
#1 Port Byron
City in Illinois, United States of America
| Population | 1,597 |
| Coordinates | 41.6064200, -90.3354100 |
| Altitude | 184 |
| 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: 175 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 37m |
| 40 mph (64.37 km/h) | 02h 42m |
| 50 mph (80.47 km/h) | 02h 10m |
| 60 mph (96.56 km/h) | 01h 48m |
| 70 mph (112.65 km/h) | 01h 33m |
| 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 | $14.44 | $28.89 |
| Mid-grade | $4.25 | $16.29 | $32.58 |
| Premium | $4.65 | $17.82 | $35.65 |
| Diesel | $5.30 | $20.31 | $40.63 |
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 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.