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Trip from Carl Junction, MO to O'Fallon, MO

Drive Time

5h 32m

Distance

286.6 mi

461 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$44

one way

EV Charging

None

0 DC fast

Best Time to Leave

Save up to 40 min
4 AM
5h 20m ★
6 AM
5h 33m
8 AM
6h 0m
10 AM
5h 42m
12 PM
5h 40m
3 PM
5h 44m
5 PM
5h 58m
8 PM
5h 25m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Downtown Carl Junction, MO, MO

Carl Junction, MO

Kelly

Downtown O'Fallon, MO, MO

O'Fallon, MO

Wikimedia Commons

Trip Overview

The drive from Carl Junction, MO to O'Fallon, MO covers 286.6 miles and takes about 5h 32m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on Congressman Gene Taylor Highway, Manchester Road, MO K for much of the mileage, and the overall profile is turn-heavy local drive. The longest uninterrupted segment is about 237.6 miles on Congressman Gene Taylor Highway. At current regular gas prices, budget about $43.53 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

143.3 miles from Carl Junction, MO

A natural place for your longest stop of the day , about 2h 41m into the drive .

Drive Character

Expect a 5h 32m drive with frequent turns across 286.6 miles of local and secondary roads.

This route has more turning and local-road decision points than a simple highway run.
There are about 37 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Congressman Gene Taylor Highway is the longest continuous segment at about 237.6 miles.

How Hard Is This Drive?

Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 11.9 miles in.

Route Complexity 7/10

Demanding - plan breaks and stay ahead of the key maneuvers

This is a demanding drive. With 21 significant decision points across 286.6 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: at 11.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 15.7 miles (I 44; I 49; US 71 / Congressman Gene Taylor Highway): Merge point - match speed before joining. Lane positioning matters here; at 253.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 21 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

5
11.9 mi into trip | ~16m in

Take the exit toward MO 66, I 44 Business

Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one

Toward MO 66, I 44 Business
5
15.7 mi into trip | ~23m 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
253.3 mi into trip | ~4h 39m 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
253.5 mi into trip | ~4h 40m in | MO 100 / Manchester Road

Turn left onto MO 100 / Manchester Road

Lane positioning matters here

Use the straight lane.
7
279.1 mi into trip | ~5h 19m 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

Towns Along This Route

On the drive from Carl Junction, MO to O'Fallon, MO, road signs begin pointing toward Kansas City along the way.

Kansas City

15.1 mi in | ~21m | via I 44 Business

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
Governor Warren E Hearnes Memorial Highway 3.4 mi 3m
Avenue of the Saints 3.1 mi 3m
MO 171 3.1 mi 4m
South Eatherton Road 2.4 mi 4m
Longest stretch: Congressman Gene Taylor Highway — 237.6 mi, about 4h 16m

Turn-by-Turn Driving Directions

Step-by-step road directions between Carl Junction, MO and O'Fallon, MO.

1

Start on MO Z

1.3 mi · 2 min · West Pennell Street
2

Turn right onto MO 171

3.1 mi · 4 min · MO 171
3

Enter roundabout onto MO 171

131 ft · 2 sec · Demott Drive
4

Continue on MO 171

2.0 mi · 3 min · Demott Drive
5

Continue on I 49 Business; MO 171

0.9 mi · 1 min · West MacArthur Drive
6

Enter roundabout onto I 49 Business; MO 171

234 ft · 3 sec · I 49 Business; MO 171
7

Continue on I 49 Business; MO 171

0.6 mi · 37 sec · I 49 Business; MO 171
8

Take the exit

0.6 mi · 41 sec
Toward MO 249 South: Joplin
9

Merge onto MO 249

3.4 mi · 3 min · Governor Warren E Hearnes Memorial Highway
Toward MO 249 South: Joplin
10

Take the exit

0.3 mi · 38 sec
Toward MO 66, I 44 Business
11

Turn left onto I 44 Business; MO 66

2.0 mi · 3 min · East 7th Street
12

Continue on I 44 Business; MO 66

0.9 mi · 1 min · Cimarron Road
13

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
14

Merge onto I 44; I 49; US 71

238 mi · 4 hr 16 min · Congressman Gene Taylor Highway
Use the straight / slight right lanes.
15

Take the exit

0.2 mi · 27 sec
Exit 253 Toward I 44 Business, MO 100 East: Gray Summit Use the slight right lane.
16

Turn left onto MO 100

13 mi · 18 min · Manchester Road
Use the straight lane.
17

Take the exit

0.2 mi · 30 sec
Toward MO 109
18

Enter roundabout onto MO 109

224 ft · 4 sec · MO 109
19

Continue on MO 109

515 ft · 10 sec · MO 109
20

Enter roundabout onto MO 109

98 ft · 1 sec · MO 109
21

Continue on MO 109

0.4 mi · 45 sec · MO 109
22

Enter roundabout onto MO 109

94 ft · 2 sec · MO 109
23

Continue on MO 109

4.3 mi · 6 min · MO 109
24

Enter roundabout onto South Eatherton Road

94 ft · 1 sec · South Eatherton Road
25

Continue on South Eatherton Road

2.4 mi · 4 min · South Eatherton Road
26

Continue on Olive Street Road

0.9 mi · 1 min · Olive Street Road
27

Take the ramp onto Chesterfield Airport Road

0.7 mi · 1 min · Chesterfield Airport Road
28

Merge onto I 64; US 40; US 61

3.1 mi · 3 min · Avenue of the Saints
Use the straight lane.
29

Take the exit

327 ft · 6 sec
Exit 9 Toward MO K: O'Fallon Use the straight / slight right lanes.
30

Merge onto North Outer Road

0.3 mi · 31 sec · North Outer Road
31

Continue on North Outer Road

0.2 mi · 17 sec · North Outer Road
32

Turn right onto MO K

3.3 mi · 5 min · MO K
33

Continue on MO K

1.5 mi · 2 min · MO K
Use the right lane.
34

Continue on MO K

1.6 mi · 3 min · MO K
Use the right lane.
35

Continue on South Main Street

0.6 mi · 1 min · South Main Street
36

Turn right

25 ft · 1 sec
37

Arrive at 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 143.3 miles from Carl Junction, MO, or about 2h 41m 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 80 miles or 1h 32m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 143.3 miles or 2h 41m 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 20m

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 Carl Junction, 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 Carl Junction, MO

This is one driving day of about 286.6 miles and 5h 32m.

Your first comfortable stop window is around 80 miles from Carl Junction, 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.

Halfway Point

Midpoint

About 143.3 mi from Carl Junction, MO · 2h 41m into the drive

Downtown Cahokia, IL, IL

Mid-route town

Meal stop

Cahokia, IL

143 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

Ash Flat, AR

Fuel and coffee

A short stop after about 80 miles helps settle the day before fatigue starts building.

Cahokia, IL

Meal break

The midpoint is around 143.3 miles from Carl Junction, MO, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before Congressman Gene Taylor Highway if your tank is already low. That segment runs about 237.6 miles.

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.

After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

National Parks Near This Route

Worth a detour if your schedule allows.

George Washington Carver National Monument

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...

7 mi from route ~19 min detour Free near mile 19.8
View on nps.gov
Wilson's Creek National Battlefield

Wilson's Creek National Battlefield

National Battlefield

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 69.2
View on nps.gov
Gateway Arch National Park

Gateway Arch National Park

National Park

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...

25 mi from route ~62 min detour $19 near mile 266.8
View on nps.gov

Park data from the National Park Service API. Alerts update every 2 hours.

Fuel & Cost

Regular Gas

$43.53 one way

$87.06 round trip

$3.86/gal 25.4 MPG avg 100 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.25 $47.99 $95.98
premium $4.80 $54.10 $108.21
diesel $5.64 $63.67 $127.35

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: 100.3 kg one way. Prices: EIA weekly data, 2026-04-06.

Driving Electric?

About $30 in charging · 1 stop · 66% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 86 1 $30.09 $13.76
Efficient EV 71.7 0 $25.08 $11.46
EV Truck/SUV 114.6 1 $40.12 $18.34

Gas CO2

100 kg

EV CO2

34 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.

Forecast data refreshed 3 days ago

Origin

Carl Junction, MO

Morning in Carl Junction on Monday

Local time

10:55 AM

CDT

Current temp

57°F

Unavailable

Live forecast

Destination

O'Fallon, MO

Morning in O'Fallon on Monday

Local time

10:55 AM

CDT

Current temp

53°F

Unavailable

Live forecast

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

4 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 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 Carl Junction, MO to O'Fallon, MO covers 286.6 miles and takes about 5h 32m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Congressman Gene Taylor Highway, Manchester Road, MO K. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 143.3 miles from Carl Junction, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $43.53 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 demanding drive. With 21 significant decision points across 286.6 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 11.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 15.7 miles (I 44; I 49; US 71 / Congressman Gene Taylor Highway): Merge point - match speed before joining. Lane positioning matters here; at 253.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from Carl Junction, MO to O'Fallon, MO, road signs begin pointing toward Kansas City along the way.

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