Connecting Monroe City to O'Fallon is a straightforward 97.2-mile journey that typically takes about 1 hour and 39 minutes. You will primarily navigate via 5th Street, US 24 East, and the Chicago-Kansas City Expressway as you transition through the Missouri Midwest. Given the manageable distance, this route is perfectly suited for a single-day trip, requiring no overnight stays. Budgeting approximately $15 for fuel should comfortably cover the drive. It is a practical, direct transit option that avoids the need for complex planning, allowing you to focus on a quick and efficient arrival at your destination.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
51.6 miles from Monroe City, MO
A natural place for your longest stop of the day
, about 1h 3m into the drive
.
Main Roads
Road
Distance
Duration
Avenue of the Saints
73.7 mi
1h 27m
Chicago-Kansas City Expressway
10.8 mi
12m
Dwight D Eisenhower Highway
6.4 mi
7m
V.F.W. Memorial Highway
5.8 mi
6m
Veterans Road
2.1 mi
3m
5th Street
1.1 mi
1m
US 24
0.7 mi
<1m
South Main Street
0.6 mi
1m
Longest stretch:
Avenue of the Saints
— 73.7 mi, about 1h 27m
Turn-by-Turn Driving Directions
Step-by-step road directions between Monroe City, MO and O'Fallon, MO.
1
Start on US 24
0.3 mi·24 sec·North Main Street
2
Turn right onto US 24; US 36 Business
1.1 mi·1 min·5th Street
3
Turn left onto US 24; US 36 Business
0.4 mi·33 sec·US 24; US 36 Business
4
Take the ramp onto US 24; US 36 Business
0.3 mi·22 sec·US 24; US 36 Business
Toward US 24 East, US 36 East, MO 110 East: Hannibal
5
Merge onto US 24; US 36; MO 110
11 mi·12 min·Chicago-Kansas City Expressway
6
Continue on US 24; US 36; MO 110
5.8 mi·6 min·V.F.W. Memorial Highway
7
Take the exit
0.2 mi·30 sec
Toward Veterans Road
8
Turn right onto Veterans Road
2.1 mi·3 min·Veterans Road
9
At end of road, turn left onto County Road 422
279 ft·6 sec·County Road 422
10
Continue on Paris Gravel Road
0.5 mi·1 min·Paris Gravel Road
11
Take the ramp
120 ft·3 sec
12
Merge onto US 61
74 mi·1 hr 27 min·Avenue of the Saints
Use the right lane.
13
Take the exit
0.5 mi·51 sec
Toward I 70 East: Saint LouisUse the slight left / straight lanes.
14
Merge onto I 70
6.4 mi·7 min·Dwight D Eisenhower Highway
Use the straight / slight right lanes.
15
Take the exit
0.3 mi·43 sec
Toward MO K: O'FallonUse the straight / slight right lanes.
16
Turn straight onto Drennen Parkway
150 ft·3 sec·Drennen Parkway
Toward MO K: O'Fallon
17
Keep slight right at fork onto Drennen Parkway
166 ft·5 sec·Drennen Parkway
Toward MO K: O'Fallon
18
Turn slight left
62 ft·2 sec
Toward MO K: O'Fallon
19
Continue on South Main Street
0.6 mi·1 min·South Main Street
20
Turn right
25 ft·1 sec
21
Arrive at destination
Trip Plan
Because this is a shorter drive, you have the flexibility to depart whenever it best suits your schedule without worrying about mid-trip lodging. Since there are no formal stops listed, ensure your vehicle is fueled up before you head out, as the $15 fuel cost estimate assumes consistent travel. Keep a close eye on your navigation, especially when transitioning between 5th Street and US 24 East, as the turn-heavy nature of the route requires frequent adjustments. Use the lack of mandatory stops to your advantage by planning your own breaks along the local roads whenever you feel the need to stretch your legs.
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 51.6 miles from Monroe City, MO, or about 1h 3m into the drive.
The longest continuous stretch on this route runs about 73.7 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 29m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 51.6 miles or 1h 3m 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 42m
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 Monroe City, 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 Monroe City, MO
This is one driving day of about 103.1 miles and 2h 6m.
Your first comfortable stop window is around 23 miles from Monroe City, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on Avenue of the Saints for about 73.7 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 1.7 and 102.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
1.7 mi into trip|~2m in|US 24; US 36 Business
Take the ramp onto US 24; US 36 Business toward US 24 East, US 36 East, MO 110 East: Hannibal
Multiple destination signs - pick the right one
Toward US 24 East, US 36 East, MO 110 East: Han...
5
21.5 mi into trip|~27m in|US 61 / Avenue of the Saints
Merge onto US 61 / Avenue of the Saints
Merge point - match speed before joining. Lane positioning matters here
Use the right lane.
6
95.3 mi into trip|~1h 55m in
Take the exit toward I 70 East: Saint Louis
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left / straight lanes.
Toward I 70 East: Saint Louis
6
102.1 mi into trip|~2h 3m 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.
Toward MO K: O'Fallon
6
102.5 mi into trip|~2h 4m in|Drennen Parkway
Keep slight right at fork onto Drennen Parkway toward MO K: O'Fallon
Highway fork - watch signs carefully
Toward MO K: O'Fallon
Fuel & Cost
Regular Gas
$16.12 one way
$32.24 round trip
$3.97/gal25.4 MPG avg36 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$17.70
$35.39
premium
$4.89
$19.84
$39.68
diesel
$5.61
$22.76
$45.53
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$16
Meals
$25–$50
Total
$41–$66
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 36.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
30.9
0
$10.83
$4.95
Efficient EV
25.8
0
$9.02
$4.12
EV Truck/SUV
41.2
0
$14.43
$6.60
Gas CO2
36 kg
EV CO2
12 kg (67% 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.
Forecast as of Apr 15, 2026
Origin
Monroe City, MO
Late night
in Monroe City on Sunday
Local time
1:04 AM
CDT
Current temp
70°F
Unavailable
Live forecast
Destination
O'Fallon, MO
Late night
in O'Fallon on Sunday
Local time
1:04 AM
CDT
Current temp
57°F
Unavailable
Live forecast
76°F
Troy, MO
52 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 6m 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.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a monotonous interstate cruise. Since the highway share is 0%, you will spend your entire time navigating local roads that demand your full attention. The route lacks long, uninterrupted highway stretches, meaning you should prepare for a more engaged driving experience. As you move between the two points, the road profile remains consistent in its local character. You will find yourself navigating smaller segments rather than settling into a high-speed rhythm, making the 97.2-mile distance feel like a series of connected local passages.
Only 11% highway — the rest is turn-by-turn surface driving.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 73.7 mi on Avenue of the Saints.
How Hard Is This Drive?
7/10
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 1.7 miles in near US 24; US 36 Business.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 15 significant decision points across 103.1 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 1.7 miles (US 24; US 36 Business): Multiple destination signs - pick the right one; at 21.5 miles (US 61 / Avenue of the Saints): Merge point - match speed before joining. Lane positioning matters here; at 95.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 6m. Total distance: 103.1 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 6m drive, comfortable solo distance.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 73.7 miles on Avenue of the Saints. The full list of main roads is in the Roads section above.
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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 1.7 miles (US 24; US 36 Business): Multiple destination signs - pick the right one; at 21.5 miles (US 61 / Avenue of the Saints): Merge point - match speed before joining. Lane positioning matters here; at 95.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at O'Fallon, MO before heading back.
