Des Plaines, IL to Knox, IL is 201.8 miles and takes about 3h 52m via Ronald Reagan Memorial Tollway, with a fuel budget near $32 and enough daylight to finish in a day. This trip stays within Illinois, taking you from the Midwest's suburban edge into its heartland. Expect a straightforward drive that's mostly highway but transitions to surface roads for the final stretch. It’s a manageable one-day trip, perfect if you're looking for an efficient way to cover ground within the state.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
100.9 miles from Des Plaines, IL
A natural place for your longest stop of the day
, about 1h 57m into the drive
.
Main Roads
Road
Distance
Duration
Ronald Reagan Memorial Tollway
95.3 mi
1h 45m
Chicago-Kansas City Expressway
44.8 mi
48m
Ronald Reagan Memorial Highway
38.9 mi
41m
Tri-State Tollway
10.5 mi
14m
IL 110
7.1 mi
8m
South Des Plaines River Road
1.8 mi
3m
Knox Road 1020 East
1.4 mi
5m
Mine Road
0.5 mi
1m
Longest stretch:
Ronald Reagan Memorial Tollway
— 95.3 mi, about 1h 45m
Traffic on I-80
Hour-of-day weekday pattern from 4 FHWA count stations on your route.
Peak
3 PM
~784 veh/hr typical
· worst 1,084
Quietest
2 AM
~85 veh/hr
Peak-to-quiet ratio
9.2×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 81 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 Des Plaines, IL and Knox, IL.
1
Start on Henry Avenue
0.1 mi·25 sec·Henry Avenue
2
Turn right onto South Des Plaines River Road
1.8 mi·3 min·South Des Plaines River Road
Use the left lane.
3
Take the ramp
0.4 mi·55 sec
Toward I 294 South: Indiana
4
Merge onto I 294
8.9 mi·11 min·Tri-State Tollway
Use the straight / slight right lanes.
5
Take the exit onto I 294
1.0 mi·1 min·Tri-State Tollway
Toward I 88 West, I 294 South: Aurora, IndianaUse the slight right lane.
6
Keep slight right at fork onto I 294
0.2 mi·30 sec·Tri-State Tollway
Toward I 88 West, I 294 South: Aurora, IndianaUse the slight right lane.
7
Continue on I 294
0.4 mi·47 sec·Tri-State Tollway
Exit 15AToward I 88 West, I 294 South: Aurora, Indiana
8
Keep slight right at fork
0.5 mi·49 sec
Exit 31AToward I 88 West Toll: AuroraUse the straight / slight right lanes.
9
Merge onto I 88; IL 110
0.8 mi·59 sec·Ronald Reagan Memorial Tollway
10
Keep slight right at fork onto I 88; IL 110
25 mi·30 min·Ronald Reagan Memorial Tollway
Exit 138Toward 22nd Street (Cermak Road)Use the slight right lane.
11
Keep slight left at fork onto I 88; IL 110
69 mi·1 hr 14 min·Ronald Reagan Memorial Tollway
Toward I 88 Toll West, IL 47: DeKalbUse the straight / slight right lanes.
12
Continue on I 88; IL 110
1.1 mi·1 min·Ronald Reagan Memorial Highway
13
Continue on I 88; IL 110
38 mi·40 min·Ronald Reagan Memorial Highway
Exit 41
14
Continue on I 88; IL 92; IL 110
5.4 mi·5 min·Chicago-Kansas City Expressway
15
Take the exit onto IL 110
7.1 mi·8 min·IL 110
Toward I 80: Peoria
16
Keep slight left at fork onto IL 110
39 mi·42 min·Chicago-Kansas City Expressway
17
Take the exit
0.2 mi·27 sec
Toward US 150, IL 97: Lewistown
18
Keep slight left at fork
106 ft·2 sec
Toward US 150 East: Brimfield
19
Turn straight onto US 150
0.2 mi·20 sec·US 150 / IL 97
20
Continue on Knox Road 1020 East
1.4 mi·5 min·Knox Road 1020 East
21
Turn left onto Mine Road
0.5 mi·1 min·Mine Road
22
Turn right onto Knox Station Road
148 ft·6 sec·Knox Station Road
23
Arrive at destination
Knox Station Road
Trip Plan
Given the 3-hour 52-minute estimated drive time, leaving Des Plaines in the morning is ideal to ensure you arrive in Knox with plenty of daylight. With only one stop recommended, you have flexibility to break up the drive as needed, perhaps around the halfway point. Pay attention to the transition from the Ronald Reagan Memorial Tollway to surface roads; this change can sometimes involve a slight increase in traffic or more varied speed limits. Budgeting around $32 for fuel should cover the 201.8-mile distance, but it’s always wise to check current prices and ensure you have enough fuel before heading out, especially after leaving the main tollway.
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 100.9 miles from Des Plaines, IL, or about 1h 57m into the drive.
The longest continuous stretch on this route runs about 95.3 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 44 miles or 56m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 100.9 miles or 1h 57m 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 7m
Traffic, exits, and arrival timing usually matter more near Knox, IL than in the middle of the route.
Before You Leave
+
Open the route before leaving Des Plaines, 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 Des Plaines, IL
This is one driving day of about 201.8 miles and 3h 52m.
Your first comfortable stop window is around 44 miles from Des Plaines, 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 Ronald Reagan Memorial Tollway for about 95.3 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 16
5 decision points cluster between mile 11.2 and 39.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
11.2 mi into trip|~16m in|I 294 / Tri-State Tollway
Take the exit onto I 294 / Tri-State Tollway toward I 88 West, I 294 South: Aurora, Indiana
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 88 West, I 294 South: Aurora, Indiana
8
12.2 mi into trip|~18m in|I 294 / Tri-State Tollway
Keep slight right at fork onto I 294 / Tri-State Tollway toward I 88 West, I 294 South: Aurora, Indiana
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 88 West, I 294 South: Aurora, Indiana
8
12.8 mi into trip|~19m in
Keep slight right at fork toward I 88 West Toll: Aurora
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 31A
Toward I 88 West Toll: Aurora
8
14.1 mi into trip|~21m in|I 88; IL 110 / Ronald Reagan Memorial Tollway
Keep slight right at fork onto I 88; IL 110 / Ronald Reagan Memorial Tollway toward 22nd Street (Cermak Road)
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Exit 138
Toward 22nd Street (Cermak Road)
8
39.1 mi into trip|~51m in|I 88; IL 110 / Ronald Reagan Memorial Tollway
Keep slight left at fork onto I 88; IL 110 / Ronald Reagan Memorial Tollway toward I 88 Toll West, IL 47: DeKalb
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 88 Toll West, IL 47: DeKalb
Fuel & Cost
Regular Gas
$31.29 one way
$62.57 round trip
$3.94/gal25.4 MPG avg71 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.32
$34.31
$68.61
premium
$4.93
$39.15
$78.30
diesel
$5.60
$44.48
$88.97
Estimated Tolls: $6.35
Reagan Memorial Tollway
(95.3 mi)$5.72
Tri-state Tollway
(10.5 mi)$0.63
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$31
Tolls
$6
Meals
$25–$50
Total
$63–$88
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 70.6 kg one way.
Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $21 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
60.5
0
$21.19
$9.69
Efficient EV
50.5
0
$17.66
$8.07
EV Truck/SUV
80.7
1
$28.25
$12.92
Gas CO2
71 kg
EV CO2
24 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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 Aug 27, 2026
Origin
Des Plaines, IL
Night
in Des Plaines on Saturday
Local time
11:29 PM
CDT
Current temp
65°F
Mostly Clear
NW 5 mph1% chanceLive forecast
Flood Warning
Flood Warning issued August 26 at 8:32PM CDT until August 29 at 7:00AM CDT by NWS Lincoln IL
Flood Warning
Flood Warning issued August 26 at 8:32PM CDT until August 31 at 10:00AM CDT by NWS Lincoln IL
Destination
Knox, IL
Night
in Knox on Saturday
Local time
11:29 PM
CDT
Current temp
62°F
Mostly Clear
NW 5 mph0% chanceLive forecast
Flood Warning
Flood Warning issued August 26 at 8:32PM CDT until August 29 at 7:00AM CDT by NWS Lincoln IL
Flood Warning
Flood Warning issued August 26 at 8:32PM CDT until August 31 at 10:00AM CDT by NWS Lincoln IL
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
3h 52m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Pullman National Historical Park
National Historical Park
In a growing Chicago neighborhood, diverse people and stories intertwined. All were seeking opportunity. Some succeeded. Others were limited—by race, gender, or economic status. Their stories came tog...
20 mi from route
~50 min detour
Free
near mile 13.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route consists of 26% highway driving, with your longest continuous stretch of 95.3 miles on the Ronald Reagan Memorial Tollway. After this significant highway segment, you'll transition to mostly surface roads for the remainder of your trip. Keep an eye out for the shift in driving pace as you move from the tollway to local roads, which may involve more frequent intersections and varied speed limits.
Only 26% highway — the rest is turn-by-turn surface driving.
23 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 95.3 mi on Ronald Reagan Memorial Tollway.
How Hard Is This Drive?
9/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 11.2 miles in near I 294 / Tri-State Tollway.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 16 significant decision points across 201.8 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 11.2 miles (I 294 / Tri-State Tollway): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.2 miles (I 294 / Tri-State Tollway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.8 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
911 ft588 ft
Total Climb
514 ft
Total Descent
478 ft
Highest Point
911 ft
~72.1 mi in
Elevation Range
323 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Des Plaines, IL and Knox, IL, road signs point toward Indiana and 22Nd Street (Cermak Road).
Des Plaines is in Chicagoland. It is an inner-ring, northwest suburb of Chicago with two distinct portions: a suburban northern portion reminiscient of other, nearby northwest suburbs (including Niles, Park Ridge, and Mount Prospect), as well as a built-up southern portion with the businesses, hotels, and other amenities of the O'Hare Airport corridor (much like Rosemont, Chicago's O'Hare neighborhood, and Elk Grove Village).
Top landmarks
•McDonald's #1 Store Museum — former McDonald's spot
Doable as a same-day drive at 3h 52m. Total distance: 201.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 52m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 95.3 miles on Ronald Reagan Memorial Tollway. The full list of main roads is in the Roads section above.
Expect about $6.35 in tolls one way, starting with Reagan Memorial Tollway. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
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 Knox, 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 11.2 miles (I 294 / Tri-State Tollway): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.2 miles (I 294 / Tri-State Tollway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.8 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Pullman National Historical Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.9 hours each way, an in-and-out day trip would put you behind the wheel for 7.7 hours — manageable with a long break at Knox, IL, but most travelers stay overnight.
