Carthage, IL to Rockford, IL is 228.5 miles and takes about 4h 23m via Chicago-Kansas City Expressway and I-39, with a fuel budget near $36 and enough daylight to finish in a day. This all-Illinois route stays within the Midwest region, offering a straightforward drive through familiar landscapes. With 93% of the trip on highways, it's a good option if you're looking for efficiency and minimal fuss. The recommended single day of travel means you can easily fit this into a weekend trip or use it as a direct link between these two Illinois locations.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
114.2 miles from Carthage, IL
A natural place for your longest stop of the day
, about 2h 15m into the drive
.
Main Roads
Road
Distance
Duration
Chicago-Kansas City Expressway
108.1 mi
2h 2m
IL 110
78.8 mi
1h 24m
I 39
21.5 mi
23m
U.S. Grant Memorial Highway
4.7 mi
5m
US 136
3.8 mi
7m
South Main Street
3.7 mi
6m
North Lafayette Street
1.6 mi
2m
East 1200th Street
1.2 mi
1m
Longest stretch:
Chicago-Kansas City Expressway
— 108.1 mi, about 2h 2m
Traffic on I-39
Hour-of-day weekday pattern from 4 FHWA count stations on your route.
Peak
2 PM
~1,252 veh/hr typical
· worst 1,626
Quietest
midnight
~126 veh/hr
Peak-to-quiet ratio
9.9×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 50 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Carthage, IL and Rockford, IL.
1
Start on IL 94
62 ft·6 sec·North Madison Street
2
Turn left onto US 136; IL 94
0.8 mi·1 min·Buchanan Street
3
Continue on US 136; IL 94
0.6 mi·51 sec·E County Road 1500
4
Take the ramp
84 ft·3 sec
Use the left lane.
5
Turn left onto US 136
0.4 mi·52 sec·US 136
6
Merge onto US 136; IL 110; IL 336
21 mi·24 min·Chicago-Kansas City Expressway
7
Take the exit
0.7 mi·55 sec
8
Turn right onto US 136
3.4 mi·6 min·US 136
9
Turn left onto US 136
0.1 mi·16 sec·North Johnson Street
10
Turn slight right onto US 136
0.2 mi·30 sec·West Calhoun Street
11
Turn left onto US 67
1.6 mi·2 min·North Lafayette Street
12
Continue on US 67
1.2 mi·1 min·East 1200th Street
13
Continue on US 67; IL 110
3.4 mi·4 min·Chicago-Kansas City Expressway
14
Continue on US 67; IL 110
0.7 mi·1 min·South Monmouth Street
15
Continue on US 67; IL 110
45 mi·52 min·Chicago-Kansas City Expressway
16
Keep slight right at fork onto IL 110
32 mi·34 min·Chicago-Kansas City Expressway
Toward I 74 West: Moline, Rock Island
17
Keep slight left at fork onto IL 110
6.3 mi·6 min·Chicago-Kansas City Expressway
Toward I 80 West: Des Moines
18
Take the exit onto IL 110
79 mi·1 hr 24 min·IL 110
Exit 4BToward I 88 East, IL 92 East: Sterling, Rock Falls
19
Take the exit
0.4 mi·1 min
Exit 78BToward I 39 North, US 51 North: Rockford
20
Merge onto I 39; US 51
22 mi·23 min·I 39; US 51
21
Take the exit
1.1 mi·2 min
Toward US 20 West: Freeport, Rockford
22
Merge onto US 20
4.7 mi·5 min·U.S. Grant Memorial Highway
23
Take the exit
0.3 mi·44 sec
Toward IL 2: Rockford, Dixon
24
Keep slight right at fork
281 ft·6 sec
25
Turn straight onto IL 2
3.7 mi·6 min·South Main Street
26
Turn right onto West State Street
148 ft·4 sec·West State Street
27
Arrive at destination
West State Street
Trip Plan
To make the most of this 4h 23m drive, consider an early morning departure from Carthage, IL, to maximize your daylight hours. With only one recommended stop and 93% of the route on highways, you have flexibility in when and where you choose to break up the 228.5 miles. The estimated fuel cost is around $36, so be sure to factor that into your budget. Keep an eye on your fuel gauge, especially during the longest stretch of 108.1 miles on the Chicago-Kansas City Expressway, as services can sometimes be spaced out on interstates.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 114.2 miles from Carthage, IL, or about 2h 15m into the drive.
The longest continuous stretch on this route runs about 108.1 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 50 miles or 1h 3m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 114.2 miles or 2h 15m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 34m
Traffic, exits, and arrival timing usually matter more near Rockford, IL than in the middle of the route.
Before You Leave
+
Open the route before leaving Carthage, IL so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Carthage, IL
This is one driving day of about 228.5 miles and 4h 23m.
Your first comfortable stop window is around 50 miles from Carthage, IL.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Chicago-Kansas City Expressway for about 108.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 18
5 decision points cluster between mile 79.6 and 218.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
79.6 mi into trip|~1h 38m in|IL 110 / Chicago-Kansas City Expressway
Keep slight right at fork onto IL 110 / Chicago-Kansas City Expressway toward I 74 West: Moline, Rock Island
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward I 74 West: Moline, Rock Island
5
111.6 mi into trip|~2h 13m in|IL 110 / Chicago-Kansas City Expressway
Keep slight left at fork onto IL 110 / Chicago-Kansas City Expressway toward I 80 West: Des Moines
Highway fork - watch signs carefully
Toward I 80 West: Des Moines
6
117.9 mi into trip|~2h 19m in|IL 110
Take the exit onto IL 110 toward I 88 East, IL 92 East: Sterling, Rock Falls
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 4B
Toward I 88 East, IL 92 East: Sterling, Rock Fa...
6
196.7 mi into trip|~3h 44m in
Take the exit toward I 39 North, US 51 North: Rockford
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 78B
Toward I 39 North, US 51 North: Rockford
5
218.6 mi into trip|~4h 8m in
Take the exit toward US 20 West: Freeport, Rockford
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 20 West: Freeport, Rockford
Fuel & Cost
Regular Gas
$33.74 one way
$67.49 round trip
$3.75/gal25.4 MPG avg80 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$37.25
$74.51
premium
$4.72
$42.43
$84.85
diesel
$4.80
$43.15
$86.29
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$34
Meals
$25–$50
Total
$59–$84
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 79.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $24 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
68.6
0
$23.99
$10.97
Efficient EV
57.1
0
$19.99
$9.14
EV Truck/SUV
91.4
1
$31.99
$14.62
Gas CO2
80 kg
EV CO2
27 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jul 18, 2026
Origin
Carthage, IL
Evening
in Carthage on Monday
Local time
7:29 PM
CDT
Current temp
93°F
Sunny
W 10 mph14% chanceLive forecast
Severe Thunderstorm Watch
Severe Thunderstorm Watch issued July 18 at 12:23PM CDT until July 18 at 7:00PM CDT by NWS Chicago IL
Heat Advisory
Heat Advisory issued July 18 at 10:43AM CDT until July 21 at 7:00PM CDT by NWS Paducah KY
Destination
Rockford, IL
Evening
in Rockford on Monday
Local time
7:29 PM
CDT
Current temp
90°F
Slight Chance Showers And Thunderstorms
NW 10 mph21% chanceLive forecast
Severe Thunderstorm Watch
Severe Thunderstorm Watch issued July 18 at 12:23PM CDT until July 18 at 7:00PM CDT by NWS Chicago IL
Heat Advisory
Heat Advisory issued July 18 at 10:43AM CDT until July 21 at 7:00PM CDT by NWS Paducah KY
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
3 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 23m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
This drive is primarily highway cruising, with 93% of the 228.5 miles on major roads like the Chicago-Kansas City Expressway and I-39. You'll experience about 108.1 miles of continuous driving on the Chicago-Kansas City Expressway before transitioning to other routes. Expect a fairly consistent driving experience with many exits and services available along the main highway sections.
93% highway — fuel and pacing are the main things to plan.
27 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 108.1 mi on Chicago-Kansas City Expressway.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on Chicago-Kansas City Expressway and IL 110. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 79.6 miles in near IL 110 / Chicago-Kansas City Expressway.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 18 significant decision points across 228.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 79.6 miles (IL 110 / Chicago-Kansas City Expressway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 111.6 miles (IL 110 / Chicago-Kansas City Expressway): Highway fork - watch signs carefully; at 117.9 miles (IL 110): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
Mostly flat terrain
827 ft601 ft
Total Climb
415 ft
Total Descent
369 ft
Highest Point
827 ft
~179.5 mi in
Elevation Range
227 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Carthage, IL and Rockford, IL, road signs point toward Rock Island and Rock Falls.
Doable as a same-day drive at 4h 23m. Total distance: 228.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 23m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (93%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 108.1 miles on Chicago-Kansas City Expressway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Rockford, IL before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 79.6 miles (IL 110 / Chicago-Kansas City Expressway): Highway fork - watch signs carefully. Multiple destination signs - pick the right one; at 111.6 miles (IL 110 / Chicago-Kansas City Expressway): Highway fork - watch signs carefully; at 117.9 miles (IL 110): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Possible but tiring. At 4.4 hours each way, an in-and-out day trip would put you behind the wheel for 8.8 hours — manageable with a long break at Rockford, IL, but most travelers stay overnight.
