Origin
Decatur, IL
Morning in Decatur on Tuesday
Local time
7:05 AM
CDT
Current temp
68°F
Unavailable
Live forecast
Trip from Decatur, IL to Collinsville, IL
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
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
Decatur to Collinsville is 105.8 miles and takes about 2h 14m via I 55 and County Road 2080 E, with a fuel budget near $17 and enough daylight to finish in a day. This journey stays within Illinois, traversing the Midwest region. Expect a mixed drive that balances highway speeds with more local road experiences. It's a straightforward trip, perfect for a single-day excursion without needing an overnight stay. Consider this route if you're looking for an efficient way to connect these two Illinois cities.
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 .
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
Given the 2h 14m duration, starting your trip in the morning is ideal, allowing ample daylight for the drive and any brief pauses. With only 105.8 miles, you have flexibility and don't need to rush; consider a short break midway if needed, though the longest stretch isn't excessively long. Keep an eye on your fuel gauge, especially as you transition from I 55 to the county roads, as services might be less frequent on the latter parts of the journey. The estimated fuel cost of $17 suggests planning for this expense is straightforward for this relatively short distance.
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.
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.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 85 decision points cluster between mile 53.9 and 105.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
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
Morning in Collinsville on Tuesday
Local time
7:05 AM
CDT
Current temp
55°F
Unavailable
Live forecast
51°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
13 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.
What kind of drive is this?
This drive features a significant highway component, with 46% of the route utilizing interstates like I 55. You'll experience a stretch of 48.2 miles on I 55, offering a chance for consistent speed. The profile is described as a 'Mixed drive,' indicating that after the interstate segments, you'll transition to county roads, such as County Road 2080 E and South Taylorville Road. This means the drive will likely shift from high-speed travel to more variable speeds and potentially tighter turns as you approach your destination.
46% highway, the rest on surface roads — varied driving throughout.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 48.2 mi on I 55.
How Hard Is This Drive?
2/10
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.
About the Cities
Starting in Decatur, IL
Full guide →Founded 1823
Decatur is a city in Macon county, Illinois. There are many examples of Frank Lloyd Wright's influence on the Prairie Style Architecture in Decatur.
Top landmarks
- • Decatur Downtown Historic District — historic district in Decatur, Illinois
- • Decatur Historic District — historic district in Decatur, Illinois
- • Wabash Railroad Station and Railway Express Agency — railway station in Decatur, Illinois, United States
Arriving in Collinsville, IL
Full guide →Collinsville is a city in Southern Illinois in the Saint Louis Metro East area. It is the "Horseradish Capital of the World": 85 percent of the world's horseradish is grown in Collinsville and the surrounding area. It is also the home of Cahokia Mounds State Historic Site, a UNESCO World Heritage.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
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.
Frequently Asked Questions
The longest stretch is about 48.2 miles on I 55. The full list of main roads is in the Roads section above.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
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.
Yes. A round trip is manageable in a single day if you plan a break at Collinsville, IL before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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