Duenweg, MO to O'Fallon, MO is 273.7 miles and takes about 5h 14m via Congressman Gene Taylor Highway and Manchester Road, with a fuel budget near $43 and enough daylight to finish in a day. This trip stays within the Midwest, connecting two points within Missouri. Expect a route that is more about navigating local roads than covering long distances on interstates, with a relatively short drive time that makes it feasible for a single day. It’s a straightforward drive that should be easy to manage with one planned stop.
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
136.8 miles from Duenweg, MO
A natural place for your longest stop of the day
, about 2h 29m into the drive
.
Main Roads
Road
Distance
Duration
Congressman Gene Taylor Highway
237.6 mi
4h 16m
Manchester Road
13.4 mi
18m
MO K
6.3 mi
11m
MO 109
4.9 mi
7m
Avenue of the Saints
3.1 mi
3m
South Eatherton Road
2.4 mi
4m
East 7th Street
1.3 mi
2m
Olive Street Road
0.9 mi
1m
Longest stretch:
Congressman Gene Taylor Highway
— 237.6 mi, about 4h 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Duenweg, MO and O'Fallon, MO.
1
Start on North Irwin Street
161 ft·12 sec·North Irwin Street
2
Turn left onto I 44 Business; MO 66
1.3 mi·2 min·East 7th Street
3
Continue on I 44 Business; MO 66
0.9 mi·1 min·Cimarron Road
4
Take the ramp onto I 44 Business
0.6 mi·1 min·I 44 Business
Toward I 44 East, I 49 North, US 71 North: Springfield, Kansas City
5
Merge onto I 44; I 49; US 71
238 mi·4 hr 16 min·Congressman Gene Taylor Highway
Use the straight / slight right lanes.
6
Take the exit
0.2 mi·27 sec
Exit 253Toward I 44 Business, MO 100 East: Gray SummitUse the slight right lane.
7
Turn left onto MO 100
13 mi·18 min·Manchester Road
Use the straight lane.
8
Take the exit
0.2 mi·30 sec
Toward MO 109
9
Enter roundabout onto MO 109
224 ft·4 sec·MO 109
10
Continue on MO 109
515 ft·10 sec·MO 109
11
Enter roundabout onto MO 109
98 ft·1 sec·MO 109
12
Continue on MO 109
0.4 mi·45 sec·MO 109
13
Enter roundabout onto MO 109
94 ft·2 sec·MO 109
14
Continue on MO 109
4.3 mi·6 min·MO 109
15
Enter roundabout onto South Eatherton Road
94 ft·1 sec·South Eatherton Road
16
Continue on South Eatherton Road
2.4 mi·4 min·South Eatherton Road
17
Continue on Olive Street Road
0.9 mi·1 min·Olive Street Road
18
Take the ramp onto Chesterfield Airport Road
0.7 mi·1 min·Chesterfield Airport Road
19
Merge onto I 64; US 40; US 61
3.1 mi·3 min·Avenue of the Saints
Use the straight lane.
20
Take the exit
327 ft·6 sec
Exit 9Toward MO K: O'FallonUse the straight / slight right lanes.
21
Merge onto North Outer Road
0.3 mi·31 sec·North Outer Road
22
Continue on North Outer Road
0.2 mi·17 sec·North Outer Road
23
Turn right onto MO K
3.3 mi·5 min·MO K
24
Continue on MO K
1.5 mi·2 min·MO K
Use the right lane.
25
Continue on MO K
1.6 mi·3 min·MO K
Use the right lane.
26
Continue on South Main Street
0.6 mi·1 min·South Main Street
27
Turn right
25 ft·1 sec
28
Arrive at destination
Trip Plan
Given the 5h 14m estimated duration, leaving Duenweg in the morning should allow you to reach O'Fallon with plenty of daylight remaining. Plan for at least one stop to break up the drive and refuel, especially since the longest stretch is over 200 miles. Keep an eye on your fuel gauge, as local roads can sometimes have fewer services than major interstates. For this drive, consider using your planned stop to also grab a quick meal, as the route emphasizes local roads and may have fewer convenient dining options directly off the main path.
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 136.8 miles from Duenweg, MO, or about 2h 29m into the drive.
The longest continuous stretch on this route runs about 237.6 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 60 miles or 1h 6m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 136.8 miles or 2h 29m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 4m
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 Duenweg, 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 Duenweg, MO
This is one driving day of about 273.7 miles and 5h 14m.
Your first comfortable stop window is around 60 miles from Duenweg, 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.
The longest stretch is on Congressman Gene Taylor Highway for about 237.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 15
5 decision points cluster between mile 2.8 and 266.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
2.8 mi into trip|~4m in|I 44; I 49; US 71 / Congressman Gene Taylor Highway
Merge onto I 44; I 49; US 71 / Congressman Gene Taylor Highway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
8
240.4 mi into trip|~4h 21m in
Take the exit toward I 44 Business, MO 100 East: Gray Summit
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 253
Toward I 44 Business, MO 100 East: Gray Summit
5
240.6 mi into trip|~4h 21m in|MO 100 / Manchester Road
Turn left onto MO 100 / Manchester Road
Lane positioning matters here
Use the straight lane.
5
254.2 mi into trip|~4h 41m in|MO 109
Enter roundabout onto MO 109
Roundabout - know your exit number before entering
7
266.2 mi into trip|~5h in
Take the exit toward MO K: O'Fallon
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 9
Toward MO K: O'Fallon
Fuel & Cost
Regular Gas
$42.79 one way
$85.58 round trip
$3.97/gal25.4 MPG avg96 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$46.98
$93.96
premium
$4.89
$52.67
$105.34
diesel
$5.61
$60.43
$120.86
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$43
Meals
$25–$50
Total
$68–$93
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 95.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $29 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
82.1
1
$28.74
$13.14
Efficient EV
68.4
0
$23.95
$10.95
EV Truck/SUV
109.5
1
$38.32
$17.52
Gas CO2
96 kg
EV CO2
32 kg (67% 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.
Forecast as of Apr 20, 2026
Origin
Duenweg, MO
Late night
in Duenweg on Tuesday
Local time
3:50 AM
CDT
Current temp
72°F
Unavailable
Live forecast
Destination
O'Fallon, MO
Late night
in O'Fallon on Tuesday
Local time
3:50 AM
CDT
Current temp
71°F
Unavailable
Live forecast
69°F
Washington, MO
137 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 cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
5h 14m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
George Washington Carver National Monument
National Monument
The young child known as the "Plant Doctor" tended his secret garden while observing the day-to-day operations of a 19th century farm. Nature and nurture ultimately influenced George on his quest for...
Wilson's Creek was the first major Civil War battle fought west of the Mississippi River, and where the first Union general was killed in action. The costly Southern victory on August 10, 1861, focuse...
7 mi from route
~17 min detour
Free
near mile 56.6
Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, a...
24 mi from route
~61 min detour
$19
near mile 254.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is described as a "turn-heavy local drive," suggesting you'll be making frequent turns rather than cruising on a single highway. With a highway share of only 2, much of your time will be spent on state and county roads. The longest uninterrupted stretch is a significant 237.6 miles on Congressman Gene Taylor Highway, so while there are many turns, there are also periods of sustained driving. Be prepared for varied road conditions and potentially slower speeds as you transition between different local routes like MO K.
Only 2% highway — the rest is turn-by-turn surface driving.
28 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 237.6 mi on Congressman Gene Taylor Highway.
How Hard Is This Drive?
6/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. You will hit about 15 points where you need to pay attention to lane position or signs. The trickiest moment comes around 2.8 miles in near I 44; I 49; US 71 / Congressman Gene Taylor Highway.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 273.7 miles you will encounter 15 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 2.8 miles (I 44; I 49; US 71 / Congressman Gene Taylor Highway): Merge point - match speed before joining. Lane positioning matters here; at 240.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 240.6 miles (MO 100 / Manchester Road): Lane positioning matters here.
St. Charles, Missouri is outside of St. Louis on the bank of the Missouri River. It was Missouri's first state capital and was one of the first stops by Lewis and Clark on their journey to explore Louisiana Territory. The historic Main Street has largely been restored to its 1812-era appearance including gas lights a boardwalk and is lined with shops selling artwork, handicrafts, home decorations, antiques. There are also many restaurants.
Doable as a same-day drive at 5h 14m. Total distance: 273.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h 14m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 237.6 miles on Congressman Gene Taylor Highway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at O'Fallon, MO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 2.8 miles (I 44; I 49; US 71 / Congressman Gene Taylor Highway): Merge point - match speed before joining. Lane positioning matters here; at 240.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 240.6 miles (MO 100 / Manchester Road): Lane positioning matters here.
Yes — George Washington Carver National Monument, Wilson's Creek National Battlefield and Gateway Arch National Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.2 hours each way, a round trip means 10.5 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at O'Fallon, MO before the return drive.
