Berwyn, IL to Cahokia, IL is 289.9 miles and takes about 5h 27m via I 55, with a fuel budget near $45 and enough daylight to finish in a day. This all-Illinois trip stays within the Midwest region, covering a straightforward path south. Given its relatively short duration and high highway percentage, this route is ideal for a single-day drive. You'll be on the road for just over five hours, making it a manageable trip for most drivers. Expect a consistent driving experience for the majority of the way.
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
144.9 miles from Berwyn, IL
A natural place for your longest stop of the day
, about 2h 46m into the drive
.
Main Roads
Road
Distance
Duration
I 55
156.3 mi
2h 50m
Adlai Stevenson Expressway
125.9 mi
2h 22m
IL 3
3.6 mi
6m
South Harlem Avenue
2.8 mi
5m
Riverside Drive
0.8 mi
1m
Oak Park Avenue
0.1 mi
<1m
West 1st Street
<0.1 mi
<1m
West Cermak Road
<0.1 mi
<1m
Longest stretch:
I 55
— 156.3 mi, about 2h 50m
Traffic on I-55
Hour-of-day weekday pattern from 32 FHWA count stations on your route.
Peak
4 PM
~1,778 veh/hr typical
· worst 2,331
Quietest
2 AM
~165 veh/hr
Peak-to-quiet ratio
10.8×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 103 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 Berwyn, IL and Cahokia, IL.
1
Start on West Cermak Road
91 ft·5 sec·West Cermak Road
2
Turn right onto Oak Park Avenue
0.1 mi·21 sec·Oak Park Avenue
3
Turn right onto Riverside Drive
0.8 mi·1 min·Riverside Drive
4
Turn left onto IL 43
2.8 mi·5 min·South Harlem Avenue
5
Turn right
137 ft·5 sec
Use the straight / right lanes.
6
Keep slight left at fork
0.2 mi·29 sec
Toward I 55 South
7
Merge onto I 55
126 mi·2 hr 22 min·Adlai Stevenson Expressway
Use the straight / slight right lanes.
8
Keep slight right at fork onto I 55
65 mi·1 hr 10 min·I 55
Toward I 55 South: Saint Louis, SpringfieldUse the straight / slight right lanes.
9
Keep slight left at fork onto I 55
89 mi·1 hr 37 min·I 55
Toward I 55 South: Saint LouisUse the straight / slight right lanes.
10
Keep slight left at fork onto I 55; US 40
0.7 mi·1 min·I 55; US 40
Toward I 55 South, I 64, IL 3, US 40 West: Louisville, Saint LouisUse the straight / slight right lanes.
11
Merge onto I 55; I 64; US 40
1.0 mi·1 min·I 55; I 64; US 40
Use the straight / slight left lanes.
12
Keep slight right at fork onto I 55; IL 3
0.5 mi·32 sec·I 55; IL 3
Exit 1Toward IL 3 South: CahokiaUse the slight right lane.
13
Take the exit onto IL 3
3.6 mi·6 min·IL 3
Exit 1Toward IL 3 South: Cahokia Heights, Great River Road SouthUse the slight right lane.
14
Turn right onto West 1st Street
94 ft·4 sec·West 1st Street
15
Arrive at destination
West 1st Street
Trip Plan
To make the most of this drive, consider an early morning departure from Berwyn to maximize daylight hours for your 289.9-mile journey. With a total duration of around 5h 27m and a fuel cost estimate of $45, it’s a feasible one-day trip. The longest stretch without a major road change is 156.3 miles on I 55, so plan your stops accordingly, perhaps around the halfway point. Keep an eye on your fuel gauge, especially as you approach the final stretch into Cahokia, as services can be more spread out in certain sections.
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 144.9 miles from Berwyn, IL, or about 2h 46m into the drive.
The longest continuous stretch on this route runs about 156.3 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 64 miles or 1h 16m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 144.9 miles or 2h 46m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 27m
Traffic, exits, and arrival timing usually matter more near Cahokia, IL than in the middle of the route.
Before You Leave
+
Open the route before leaving Berwyn, 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 Berwyn, IL
This is one driving day of about 289.9 miles and 5h 27m.
Your first comfortable stop window is around 64 miles from Berwyn, 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 I 55 for about 156.3 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 13
5 decision points cluster between mile 129.9 and 286.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
129.9 mi into trip|~2h 30m in|I 55
Keep slight right at fork onto I 55 toward I 55 South: Saint Louis, Springfield
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 55 South: Saint Louis, Springfield
7
194.7 mi into trip|~3h 40m in|I 55
Keep slight left at fork onto I 55 toward I 55 South: Saint Louis
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 55 South: Saint Louis
8
284 mi into trip|~5h 18m in|I 55; US 40
Keep slight left at fork onto I 55; US 40 toward I 55 South, I 64, IL 3, US 40 West: Louisville, Saint Louis
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 55 South, I 64, IL 3, US 40 West: Loui...
8
285.7 mi into trip|~5h 20m in|I 55; IL 3
Keep slight right at fork onto I 55; IL 3 toward IL 3 South: Cahokia
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Exit 1
Toward IL 3 South: Cahokia
8
286.2 mi into trip|~5h 21m in|IL 3
Take the exit onto IL 3 toward IL 3 South: Cahokia Heights, Great River Road South
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 1
Toward IL 3 South: Cahokia Heights, Great River...
Fuel & Cost
Regular Gas
$48.36 one way
$96.72 round trip
$4.24/gal25.4 MPG avg101 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$52.56
$105.12
premium
$5.26
$60.02
$120.05
diesel
$6.18
$70.52
$141.05
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$48
Meals
$25–$50
Total
$73–$98
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 101.4 kg one way.
Prices: EIA weekly data, 2026-10-12.
Driving Electric?
About $30 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
87
1
$30.44
$13.92
Efficient EV
72.5
0
$25.37
$11.60
EV Truck/SUV
116
1
$40.59
$18.55
Gas CO2
101 kg
EV CO2
34 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 Oct 17, 2026
Origin
Berwyn, IL
Morning
in Berwyn on Sunday
Local time
6:06 AM
CDT
Current temp
38°F
Mostly Clear
N 10 mph1% chanceLive forecast
Freeze Warning
Freeze Warning issued October 17 at 2:24AM CDT until October 17 at 9:00AM CDT by NWS Quad Cities IA IL
Freeze Warning
Freeze Warning issued October 17 at 2:22AM CDT until October 17 at 8:00AM CDT by NWS Chicago IL
Destination
Cahokia, IL
Morning
in Cahokia on Sunday
Local time
6:06 AM
CDT
Current temp
41°F
Clear
N 7 mph0% chanceLive forecast
Freeze Warning
Freeze Warning issued October 17 at 2:24AM CDT until October 17 at 9:00AM CDT by NWS Quad Cities IA IL
Freeze Warning
Freeze Warning issued October 17 at 2:22AM CDT until October 17 at 8:00AM CDT by NWS Chicago IL
53°F
Bloomington, IL
145 mi in
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 warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 27m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Springfield 1908 Race Riot National Monument
National Monument
In August 1908, a large White mob attacked the Black community in Springfield, Illinois. Rioters destroyed homes and businesses and lynched two men. The event led to the founding of the National Assoc...
2 mi from route
~6 min detour
Free
near mile 189.9
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...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is 99% highway, meaning you'll spend nearly the entire 5h 27m drive on high-speed roads. The longest uninterrupted stretch is 156.3 miles on I 55. You'll transition from the Adlai Stevenson Expressway onto I 55 for the bulk of your travel. Expect a dense pattern of exits and merges as you navigate through various Illinois towns and cities along this corridor.
99% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 156.3 mi on I 55.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 55 and Adlai Stevenson Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 129.9 miles in near I 55.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 289.9 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 129.9 miles (I 55): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 194.7 miles (I 55): Highway fork - watch signs carefully. Lane positioning matters here; at 284 miles (I 55; US 40): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Mostly flat terrain
811 ft407 ft
Total Climb
472 ft
Total Descent
683 ft
Highest Point
811 ft
~124.2 mi in
Elevation Range
404 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Berwyn, IL to Cahokia, IL, road signs begin pointing toward Springfield along the way.
Doable as a same-day drive at 5h 27m. Total distance: 289.9 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 27m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (99%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 156.3 miles on I 55. The full list of main roads is in the Roads section above.
Yes — we found about 35 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Cahokia, 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. There are 35 rest areas along the route for bathroom stops.
The main spots that need attention: at 129.9 miles (I 55): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 194.7 miles (I 55): Highway fork - watch signs carefully. Lane positioning matters here; at 284 miles (I 55; US 40): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Springfield 1908 Race Riot National Monument and Pullman National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.5 hours each way, a round trip means 10.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Cahokia, IL before the return drive.
