Origin
Carterville, MO
Morning in Carterville on Saturday
Local time
6:32 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from Carterville, MO to O'Fallon, MO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
4h 32m
Distance
279.5 mi
450 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$44
one way
EV Charging
Unknown
Best Time to Leave
4 AM
4h 19m
★
6 AM
4h 32m
8 AM
4h 59m
10 AM
4h 41m
12 PM
4h 39m
3 PM
4h 43m
5 PM
4h 58m
8 PM
4h 24m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
O'Fallon, MO
Wikimedia Commons
Trip Overview
The drive from Carterville, MO to O'Fallon, MO covers 279.5 miles and takes about 4h 32m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 49, Edward F, West Central Avenue for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $43.70 one way before food or hotel costs.
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
139.7 miles from Carterville, MO
A natural place for your longest stop of the day , about 2h 16m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 32m. Total distance: 279.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 32m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (0%). Straightforward navigation.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a 4h 32m drive with frequent turns across 279.5 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 33 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 49 is one of the defining roads on this drive.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way.
Driving Effort
3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 32m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from Carterville, MO to O'Fallon, MO is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 49 | — | — |
| Edward F | — | — |
| West Central Avenue | — | — |
| I 44 East | — | — |
| I 44 | — | — |
| Manchester Road | — | — |
| MO 109 | — | — |
| the route | — | — |
Some road-level metrics are being recalculated.
Longest stretch:
I 49
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Carterville, MO and O'Fallon, MO.
1
Start on West Main Street
0.6 mi
·
1 min
·
West Main Street
2
Continue straight
0.2 mi
·
18 sec
3
Take the ramp left toward I 49 Business, MO 171 South: Carthage
0.2 mi
·
15 sec
·
I 49 Business, MO 171 South: Carthage
4
Merge slight left onto Edward F. Dixon III Memorial Highway
5.9 mi
·
6 min
·
Edward F. Dixon III Memorial Highway
5
Continue on West Central Avenue
1.7 mi
·
4 min
·
West Central Avenue
6
Turn slight left
9.4 mi
·
11 min
7
Continue straight
0.9 mi
·
1 min
8
Continue straight
27 mi
·
30 min
9
Take the ramp straight toward I 44 East: Springfield
0.6 mi
·
1 min
·
I 44 East: Springfield
10
Merge slight left
195 mi
·
3 hr 30 min
11
Take the exit slight right toward I 44 Business, MO 100 East: Gray Summit
0.2 mi
·
28 sec
·
I 44 Business, MO 100 East: Gray Summit
12
Turn left onto Manchester Road
13 mi
·
18 min
·
Manchester Road
13
Take the exit slight right toward MO 109
0.2 mi
·
31 sec
·
MO 109
14
Enter the roundabout and take exit 3 toward the route
223 ft
·
4 sec
·
the route
15
Exit the roundabout
515 ft
·
11 sec
16
Enter the roundabout and take exit 1 toward the route
98 ft
·
2 sec
·
the route
17
Exit the roundabout
0.4 mi
·
45 sec
18
Enter the roundabout and take exit 2 toward the route
95 ft
·
2 sec
·
the route
19
Exit the roundabout
4.3 mi
·
6 min
20
Enter the roundabout and take exit 2 toward South Eatherton Road
95 ft
·
1 sec
·
South Eatherton Road
21
Exit the roundabout onto South Eatherton Road
2.4 mi
·
4 min
·
South Eatherton Road
22
Continue on Olive Street Road
0.9 mi
·
1 min
·
Olive Street Road
23
Take the ramp left toward Chesterfield Airport Road
0.7 mi
·
1 min
·
Chesterfield Airport Road
24
Merge slight left onto Avenue of the Saints
3.1 mi
·
3 min
·
Avenue of the Saints
25
Take the exit slight right toward MO K: O'Fallon
328 ft
·
6 sec
·
MO K: O'Fallon
26
Merge slight right onto North Outer Road
0.3 mi
·
31 sec
·
North Outer Road
27
Continue on North Outer Road
0.2 mi
·
18 sec
·
North Outer Road
28
Turn right
3.3 mi
·
5 min
29
Continue straight
1.5 mi
·
2 min
30
Continue straight
1.6 mi
·
3 min
31
Continue on South Main Street
0.6 mi
·
1 min
·
South Main Street
32
Turn right
26 ft
·
2 sec
33
Arrive at your destination
Trip Plan
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 139.7 miles from Carterville, MO, or about 2h 16m into the drive.
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 61 miles or 59m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 139.7 miles or 2h 16m 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 43m
Traffic, exits, and arrival timing usually matter more near O'Fallon, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving Carterville, MO 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 Carterville, MO
This is one driving day of about 279.5 miles and 4h 32m.
Your first comfortable stop window is around 61 miles from Carterville, MO.
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.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 139.7 mi from Carterville, MO · 2h 16m into the drive
Mid-route town
Meal stop
140 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 61 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 139.7 miles from Carterville, MO, which is a good place for a longer meal and fuel stop.
Arriving in O'Fallon, MO
The final approach into O'Fallon, MO 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 O'Fallon, MO.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$43.70 one way
$87.39 round trip
$3.97/gal
25.4 MPG avg
98 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $47.98 | $95.95 |
| premium | $4.89 | $53.79 | $107.57 |
| diesel | $5.61 | $61.71 | $123.42 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$44
Meals
$25–$50
Total
$69–$94
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 97.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $29 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 83.9 | 1 | $29.35 | $13.42 |
| Efficient EV | 69.9 | 0 | $24.46 | $11.18 |
| EV Truck/SUV | 111.8 | 1 | $39.13 | $17.89 |
Gas CO2
98 kg
EV CO2
33 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.
Destination
O'Fallon, MO
Morning in O'Fallon on Saturday
Local time
6:32 AM
CDT
Current temp
57°F
Unavailable
Live forecast
74°F
Washington, MO
140 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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
4h 32m 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.
Frequently Asked Questions
The drive from Carterville, MO to O'Fallon, MO covers 279.5 miles and takes about 4h 32m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 49, Edward F, West Central Avenue. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 139.7 miles from Carterville, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $43.70 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a straightforward 4h 32m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
This route does not have any notably tricky sections. Most of the drive from Carterville, MO to O'Fallon, MO is straightforward, with well-signed roads and simple exits.
The route from Carterville, MO to O'Fallon, MO does not surface many named destination signs beyond the main corridor.
How this page is built
Compiled by the Trip.ovh 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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