Origin
Decatur, IL
Afternoon in Decatur on Thursday
Local time
12:38 PM
CDT
Current temp
74°F
Unavailable
Live forecast
Trip from Decatur, IL to Collinsville, IL
Last recalculated Apr 16, 2026
Drive Time
2h 14m
Distance
105.8 mi
170 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$17
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 5m
★
6 AM
2h 15m
8 AM
2h 33m
10 AM
2h 21m
12 PM
2h 19m
3 PM
2h 22m
5 PM
2h 32m
8 PM
2h 9m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Decatur, IL
Wikimedia Commons
Collinsville, IL
Wikimedia Commons
Trip Overview
The drive from Decatur, IL to Collinsville, IL covers 105.8 miles and takes about 2h 14m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 55, County Road 2080 E, South Taylorville Road for much of the mileage, and the overall profile is mixed drive. The longest uninterrupted segment is about 48.2 miles on I 55. At current regular gas prices, budget about $16.54 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
52.9 miles from Decatur, IL
A natural place for your longest stop of the day , about 1h 14m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 14m. Total distance: 105.8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 14m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (46%). Straightforward navigation.
Drive Character
The drive from Decatur, IL to Collinsville, IL covers 105.8 miles and takes about 2h 14m, using a mix of highways and local roads.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 16 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 55 is the longest continuous segment at about 48.2 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 53.9 miles in.
Driving Effort
2/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Decatur, IL to Collinsville, IL is easy. At 2h 14m with 46% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
The main spots that need attention: at 53.9 miles: Navigation decision point; at 54.3 miles (I 55): Merge point - match speed before joining. Lane positioning matters here; at 102.4 miles: Exit ramp - move to the correct lane early.
Critical Maneuvers
5 of 8 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
53.9 mi into trip
|
~1h 15m in
Turn left toward I 55 South: East Saint Louis
Navigation decision point
Toward I 55 South: East Saint Louis
5
54.3 mi into trip
|
~1h 16m in
|
I 55
Merge onto I 55
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
5
102.4 mi into trip
|
~2h 8m in
Take the exit toward IL 159 South: Collinsville
Exit ramp - move to the correct lane early
Exit 15A
Toward IL 159 South: Collinsville
5
105.8 mi into trip
|
~2h 14m in
|
East Grove Avenue
Turn left onto East Grove Avenue
Navigation decision point
5
105.8 mi into trip
|
~2h 14m in
Turn left
Navigation decision point
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 55 | 48.2 mi | 52m |
| County Road 2080 E | 18.4 mi | 22m |
| South Taylorville Road | 12.9 mi | 15m |
| Sarpy Street | 12.2 mi | 21m |
| Front Street | 7.6 mi | 11m |
| Vandalia Street | 3 mi | 4m |
| South Main Street | 1.3 mi | 2m |
| West South Side Drive | 0.9 mi | 1m |
Longest stretch:
I 55
— 48.2 mi, about 52m
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur, IL and Collinsville, IL.
1
Start on East Wood Street
298 ft
·
15 sec
·
East Wood Street
2
Turn left onto US 51 Business
1.3 mi
·
2 min
·
South Main Street
3
Turn right onto West South Side Drive
0.9 mi
·
1 min
·
West South Side Drive
4
Turn left onto IL 48
13 mi
·
15 min
·
South Taylorville Road
5
Continue on IL 48
18 mi
·
22 min
·
County Road 2080 E
6
Continue on IL 48
0.6 mi
·
51 sec
·
County Road 975 N
7
Continue on IL 48
12 mi
·
21 min
·
Sarpy Street
8
Continue on IL 48
7.6 mi
·
11 min
·
Front Street
9
Turn left
0.3 mi
·
44 sec
Toward I 55 South: East Saint Louis
10
Merge onto I 55
48 mi
·
52 min
·
I 55
Use the straight / slight right lanes.
11
Take the exit
0.3 mi
·
47 sec
Exit 15A
Toward IL 159 South: Collinsville
12
Continue on IL 159
3.0 mi
·
4 min
·
Vandalia Street
13
Continue on IL 159
0.1 mi
·
18 sec
·
South Morrison Avenue
14
Turn left onto East Grove Avenue
59 ft
·
7 sec
·
East Grove Avenue
15
Turn left
132 ft
·
9 sec
16
Arrive at destination
Trip Plan
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 52.9 miles from Decatur, IL, or about 1h 14m into the drive.
The longest continuous stretch on this route runs about 48.2 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 23 miles or 28m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 52.9 miles or 1h 14m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 51m
Traffic, exits, and arrival timing usually matter more near Collinsville, IL than in the middle of the route.
Before You Leave
+
Open the route before leaving Decatur, 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 Decatur, IL
This is one driving day of about 105.8 miles and 2h 14m.
Your first comfortable stop window is around 23 miles from Decatur, IL.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 55 for about 48.2 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 52.9 mi from Decatur, IL · 1h 14m into the drive
Mid-route town
Meal stop
53 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 23 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 52.9 miles from Decatur, IL, which is a good place for a longer meal and fuel stop.
Arriving in Collinsville, IL
The final approach into Collinsville, IL usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Collinsville, IL.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$16.54 one way
$33.08 round trip
$3.97/gal
25.4 MPG avg
37 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $18.16 | $36.32 |
| premium | $4.89 | $20.36 | $40.72 |
| diesel | $5.61 | $23.36 | $46.72 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$17
Meals
$25–$50
Total
$42–$67
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 37 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging · 0 stops · 68% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 31.7 | 0 | $11.11 | $5.08 |
| Efficient EV | 26.5 | 0 | $9.26 | $4.23 |
| EV Truck/SUV | 42.3 | 0 | $14.81 | $6.77 |
Gas CO2
37 kg
EV CO2
12 kg (68% 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.
Destination
Collinsville, IL
Afternoon in Collinsville on Thursday
Local time
12:38 PM
CDT
Current temp
57°F
Unavailable
Live forecast
54°F
Litchfield, IL
53 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
17 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
2h 14m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Decatur, IL to Collinsville, IL covers 105.8 miles and takes about 2h 14m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 55, County Road 2080 E, South Taylorville Road. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 52.9 miles from Decatur, IL. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $16.54 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
The drive from Decatur, IL to Collinsville, IL is easy. At 2h 14m with 46% highway, most drivers will find it relaxed and low-stress.
The main spots that need attention: at 53.9 miles: Navigation decision point; at 54.3 miles (I 55): Merge point - match speed before joining. Lane positioning matters here; at 102.4 miles: Exit ramp - move to the correct lane early.
The route from Decatur, IL to Collinsville, IL does not surface many named destination signs beyond the main corridor.
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