How far is Elgin, IL from Cahokia, IL?
The driving distance from Elgin, IL to Cahokia, IL is about 305.2 miles (491.2 km), with a travel time of about 05h 46m by car.
- The straight-line flight distance is about 259.7 miles (418 km).
- For a round trip, plan for roughly 11h 32m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 05h 46m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 McLean County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Elgin and Cahokia.
Turn-by-Turn Driving Directions
Step-by-step road directions between Elgin and Cahokia.
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1
Start on East Chicago Street
10 m · 5 sec · East Chicago Street
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2
Turn right onto Villa Street
2.4 mi · 4 min · Villa Street
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3
Merge slight right onto Martin Luther King Jr Memorial Highway
1583 ft · 29 sec · Martin Luther King Jr Memorial Highway
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4
Continue on West Lake Street
5.2 mi · 7 min · West Lake Street
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5
Continue on Lake Street
6.5 mi · 10 min · Lake Street
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6
Take the ramp right toward I 355 Toll South: Joliet
1589 ft · 39 sec
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7
Merge slight left
18.2 mi · 23 min
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8
Take the exit slight right toward I 55 South: Joliet Road, Saint Louis
1453 ft · 36 sec
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9
Keep slight left to continue on Joliet Road South
1965 ft · 48 sec
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10
Keep slight left to continue on I 55 South: Saint Louis
706 ft · 17 sec
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11
Merge slight left onto Adlai Stevenson Expressway
111.5 mi · 2 hr 3 min · Adlai Stevenson Expressway
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12
Keep slight right to continue on I 55 South: Saint Louis, Springfield
64.8 mi · 1 hr 10 min
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13
Keep slight left to continue on I 55 South: Saint Louis
89.3 mi · 1 hr 37 min
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14
Keep slight left to continue on I 55 South, I 64, IL 3, US 40 West: Louisville, Saint Louis
1.1 km · 1 min
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15
Merge slight left
1 mi · 2 min
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16
Keep slight right to continue on IL 3 South: Cahokia
2632 ft · 32 sec
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17
Take the exit slight right toward IL 3 South: Cahokia Heights, Great River Road South
3.6 mi · 6 min
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18
Turn right onto West 1st Street
29 m · 4 sec · West 1st Street
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19
Arrive at your destination
0 m · 1 sec · West 1st Street
Car Route Details
A richer read on the saved driving route between Elgin and Cahokia.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Adlai Stevenson Expressway
Merge slight left onto Adlai Stevenson Expressway
112 mi · 02h 03m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Elgin and Sunny near Cahokia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Elgin to Cahokia?
The road trip is about 305.2 miles (491.2 km) and usually takes 05h 46m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Funks Grove is a useful midpoint, sitting about 152.6 miles from Elgin and 152.5 miles from Cahokia.
How much longer is the road route than the straight-line distance?
The direct path is about 259.7 miles (418 km), while the road route adds roughly 45.5 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 5:28 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $40.61 one way or $81.23 round trip. Estimated CO2 is about 95.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Elgin and Sunny near Cahokia.
Stop Ideas Near Funks Grove
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Route 66 Original Alignment- Driveable!
City of Bloomington, Illinois
Bloomington Finance Department
City Hall - Town of Normal
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Funks Grove.
Uptown Station
Lincoln
Peoria, Illinois
Pontiac station
Flight Path Map
This map shows the direct air route between Elgin and Cahokia. Straight-line distance: 259.75 mi (418.02 km).
#1 Elgin
The second most populous city in Kane County, Illinois.
| Population | 110,196 |
| Coordinates | 42.0372500, -88.2811900 |
| Altitude | 227 |
| Country | United States |
#2 Cahokia
Village in St.
| Population | 13,742 |
| Coordinates | 38.5708800, -90.1901100 |
| Altitude | 124 |
| Country | United States |
End: Cahokia (-90.19011, 38.57088)
Estimated Travel Time
Distance: 491 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 10m |
| 40 mph (64.37 km/h) | 07h 37m |
| 50 mph (80.47 km/h) | 06h 06m |
| 60 mph (96.56 km/h) | 05h 05m |
| 70 mph (112.65 km/h) | 04h 21m |
| 80 mph (129 km/h) | 03h 48m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $40.61 | $81.23 |
| Mid-grade | $4.25 | $45.80 | $91.61 |
| Premium | $4.65 | $50.12 | $100.25 |
| Diesel | $5.30 | $57.12 | $114.25 |
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 · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.