Origin
Smithville, MO
Late night in Smithville on Friday
Local time
5:20 AM
CDT
Current temp
56°F
Unavailable
Live forecast
Trip from Smithville, MO to O'Fallon, MO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
3h 34m
Distance
237.7 mi
383 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$37
one way
EV Charging
Unknown
Best Time to Leave
4 AM
3h 22m
★
6 AM
3h 35m
8 AM
4h 0m
10 AM
3h 44m
12 PM
3h 41m
3 PM
3h 45m
5 PM
3h 58m
8 PM
3h 27m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Smithville, MO
ShotPot
O'Fallon, MO
Wikimedia Commons
Trip Overview
The drive from Smithville, MO to O'Fallon, MO covers 237.7 miles and takes about 3h 34m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on West Main Street, I 435 East, I 70 for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $37.16 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.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
118.9 miles from Smithville, MO
A natural place for your longest stop of the day , about 1h 47m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 34m. Total distance: 237.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 34m 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 3h 34m drive with frequent turns across 237.7 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 26 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
West Main Street 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 3h 34m 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 Smithville, MO to O'Fallon, MO is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| West Main Street | — | — |
| I 435 East | — | — |
| I 70 | — | — |
| I 70 East | — | — |
| George Brett Super Highway | — | — |
| Truman/Eisenhower Presidential Highway | — | — |
| Clifton J | — | — |
| Dwight D | — | — |
Some road-level metrics are being recalculated.
Longest stretch:
West Main Street
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Smithville, MO and O'Fallon, MO.
1
Start on the route
69 ft
·
11 sec
·
the route
2
Turn left onto West Main Street
0.2 mi
·
41 sec
·
West Main Street
3
Turn left
5.4 mi
·
7 min
4
Take the exit slight right toward I 435 East: Saint Louis
0.3 mi
·
53 sec
·
I 435 East: Saint Louis
5
Merge slight left
21 mi
·
23 min
6
Keep slight right to continue on I 70, US 24 West, US 40: Saint Louis, Kansas City, Sports Complex
0.3 mi
·
23 sec
·
I 70, US 24 West, US 40: Saint Louis, Kansas City, Sports Complex
7
Keep slight left to continue on I 70 East: Saint Louis
1.2 mi
·
1 min
·
I 70 East: Saint Louis
8
Keep slight left to continue on I 70 East: Saint Louis
469 ft
·
12 sec
·
I 70 East: Saint Louis
9
Merge slight left onto George Brett Super Highway
0.4 mi
·
29 sec
·
George Brett Super Highway
10
Continue on Truman/Eisenhower Presidential Highway
2.9 mi
·
3 min
·
Truman/Eisenhower Presidential Highway
11
Continue on Clifton J. Scott Memorial Highway
1.8 mi
·
2 min
·
Clifton J. Scott Memorial Highway
12
Continue on Truman/Eisenhower Presidential Highway
2.6 mi
·
3 min
·
Truman/Eisenhower Presidential Highway
13
Continue on Dwight D. Eisenhower Highway
53 mi
·
56 min
·
Dwight D. Eisenhower Highway
14
Continue on U.S. Submarine Veterans' Memorial Highway
32 mi
·
34 min
·
U.S. Submarine Veterans' Memorial Highway
15
Keep slight left to continue on U.S. Submarine Veterans' Memorial Highway
22 mi
·
24 min
·
U.S. Submarine Veterans' Memorial Highway
16
Continue on Dwight D. Eisenhower Highway
1.8 mi
·
2 min
·
Dwight D. Eisenhower Highway
17
Continue on Highway Patrol Sgt. Benjamin Booth Memorial Highway
1.6 mi
·
1 min
·
Highway Patrol Sgt. Benjamin Booth Memorial Highway
18
Continue on Sheriff Roger I. Wilson Memorial Highway
1.9 mi
·
2 min
·
Sheriff Roger I. Wilson Memorial Highway
19
Continue on Dwight D. Eisenhower Highway
88 mi
·
1 hr 44 min
·
Dwight D. Eisenhower Highway
20
Take the exit slight right toward MO K: O'Fallon
0.3 mi
·
43 sec
·
MO K: O'Fallon
21
Turn straight onto Drennen Parkway
151 ft
·
3 sec
·
Drennen Parkway
22
Keep slight right to continue on Drennen Parkway
167 ft
·
6 sec
·
Drennen Parkway
23
Turn slight left onto MO K: O'Fallon
62 ft
·
3 sec
·
MO K: O'Fallon
24
Continue on South Main Street
0.6 mi
·
1 min
·
South Main Street
25
Turn right
26 ft
·
2 sec
26
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 118.9 miles from Smithville, MO, or about 1h 47m 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 52 miles or 46m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 118.9 miles or 1h 47m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 56m
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 Smithville, 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 Smithville, MO
This is one driving day of about 237.7 miles and 3h 34m.
Your first comfortable stop window is around 52 miles from Smithville, 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 118.9 mi from Smithville, MO · 1h 47m into the drive
Mid-route town
Meal stop
119 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 52 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 118.9 miles from Smithville, 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
$37.16 one way
$74.32 round trip
$3.97/gal
25.4 MPG avg
83 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $40.80 | $81.60 |
| premium | $4.89 | $45.74 | $91.49 |
| diesel | $5.61 | $52.48 | $104.96 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$37
Meals
$25–$50
Total
$62–$87
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 83.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $25 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 71.3 | 0 | $24.96 | $11.41 |
| Efficient EV | 59.4 | 0 | $20.80 | $9.51 |
| EV Truck/SUV | 95.1 | 1 | $33.28 | $15.21 |
Gas CO2
83 kg
EV CO2
28 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Late night in O'Fallon on Friday
Local time
5:20 AM
CDT
Current temp
57°F
Unavailable
Live forecast
55°F
New Franklin, MO
119 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
1 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
3h 34m 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 Smithville, MO to O'Fallon, MO covers 237.7 miles and takes about 3h 34m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are West Main Street, I 435 East, I 70. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 118.9 miles from Smithville, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $37.16 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. A short stop every 2 to 3 hours is enough for this drive.
This is a straightforward 3h 34m 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 Smithville, MO to O'Fallon, MO is straightforward, with well-signed roads and simple exits.
The route from Smithville, MO to O'Fallon, MO does not surface many named destination signs beyond the main corridor.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Pages are published only after passing our data-quality checks; our methodology page documents refresh cadence, editorial standards, and known limitations.
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