La Plata, MO to O'Fallon, MO is 163.3 miles and takes about 3h 15m via US 63, with a fuel budget near $25 and enough daylight to finish in a day. This drive keeps you within Missouri, traversing the Midwest region from start to finish. Expect a mixed drive that balances efficiency with a less intense pace than a pure interstate journey. It's a straightforward trip, ideal for a single day of travel, and the relatively short duration means you can depart at your leisure.
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
81.7 miles from La Plata, MO
A natural place for your longest stop of the day
, about 1h 37m into the drive
.
Main Roads
Road
Distance
Duration
Avenue of the Saints
73.7 mi
1h 27m
Chicago-Kansas City Expressway
52.9 mi
1h 1m
US 63
19 mi
21m
Dwight D Eisenhower Highway
6.4 mi
7m
V.F.W. Memorial Highway
5.8 mi
6m
Veterans Road
2.1 mi
3m
East Clark Street
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 La Plata, MO and O'Fallon, MO.
1
Start on East Moore Street
20 ft·6 sec·East Moore Street
2
Turn left onto South Gex Street
0.2 mi·42 sec·South Gex Street
3
Turn left onto MO 156
0.7 mi·1 min·East Clark Street
4
Turn right onto US 63
19 mi·21 min·US 63
5
Take the exit
0.2 mi·12 sec
Toward US 36 East, MO 110 East: Hannibal
6
Merge onto US 36; MO 110
53 mi·1 hr 1 min·Chicago-Kansas City Expressway
7
Continue on US 24; US 36; MO 110
5.8 mi·6 min·V.F.W. Memorial Highway
8
Take the exit
0.2 mi·30 sec
Toward Veterans Road
9
Turn right onto Veterans Road
2.1 mi·3 min·Veterans Road
10
At end of road, turn left onto County Road 422
279 ft·6 sec·County Road 422
11
Continue on Paris Gravel Road
0.5 mi·1 min·Paris Gravel Road
12
Take the ramp
120 ft·3 sec
13
Merge onto US 61
74 mi·1 hr 27 min·Avenue of the Saints
Use the right lane.
14
Take the exit
0.5 mi·51 sec
Toward I 70 East: Saint LouisUse the slight left / straight lanes.
15
Merge onto I 70
6.4 mi·7 min·Dwight D Eisenhower Highway
Use the straight / slight right lanes.
16
Take the exit
0.3 mi·43 sec
Toward MO K: O'FallonUse the straight / slight right lanes.
17
Turn straight onto Drennen Parkway
150 ft·3 sec·Drennen Parkway
Toward MO K: O'Fallon
18
Keep slight right at fork onto Drennen Parkway
166 ft·5 sec·Drennen Parkway
Toward MO K: O'Fallon
19
Turn slight left
62 ft·2 sec
Toward MO K: O'Fallon
20
Continue on South Main Street
0.6 mi·1 min·South Main Street
21
Turn right
25 ft·1 sec
22
Arrive at destination
Trip Plan
With a total travel time of just over 3 hours, this is a very manageable one-day trip. You could easily leave La Plata in the morning and arrive in O'Fallon by lunchtime. There's one recommended stop, so plan for a brief break to stretch your legs or refuel. Keep an eye on your fuel gauge, especially during the longest stretch of 73.7 miles on the Avenue of the Saints, as services might be more spaced out in certain areas. The $25 fuel cost is a good estimate, but always factor in a little extra for peace of mind.
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 81.7 miles from La Plata, MO, or about 1h 37m 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 36 miles or 42m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 81.7 miles or 1h 37m 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 39m
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 La Plata, 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 La Plata, MO
This is one driving day of about 163.3 miles and 3h 15m.
Your first comfortable stop window is around 36 miles from La Plata, 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 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 16
5 decision points cluster between mile 0 and 162.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|South Gex Street
Turn left onto South Gex Street
Navigation decision point
6
19.9 mi into trip|~23m in
Take the exit toward US 36 East, MO 110 East: Hannibal
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 36 East, MO 110 East: Hannibal
6
155.4 mi into trip|~3h 4m 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
162.3 mi into trip|~3h 13m 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
162.7 mi into trip|~3h 14m 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
$25.53 one way
$51.06 round trip
$3.97/gal25.4 MPG avg57 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$28.03
$56.06
premium
$4.89
$31.43
$62.85
diesel
$5.61
$36.05
$72.11
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$26
Meals
$25–$50
Total
$51–$76
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 57.1 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $17 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
49
0
$17.15
$7.84
Efficient EV
40.8
0
$14.29
$6.53
EV Truck/SUV
65.3
0
$22.86
$10.45
Gas CO2
57 kg
EV CO2
19 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 20, 2026
Origin
La Plata, MO
Morning
in La Plata on Tuesday
Local time
7:02 AM
CDT
Current temp
64°F
Unavailable
Live forecast
Destination
O'Fallon, MO
Morning
in O'Fallon on Tuesday
Local time
7:02 AM
CDT
Current temp
71°F
Unavailable
Live forecast
68°F
Troy, MO
82 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
7 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 15m 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?
This route offers a varied driving experience, with 44% of the journey on highways. You'll encounter stretches on the Avenue of the Saints, including one uninterrupted segment of 73.7 miles, providing a good rhythm for covering distance. The profile is described as a mixed drive, suggesting a blend of faster highway sections and potentially more local road travel as you navigate between these main arteries. It's not a constant interstate push, allowing for a more dynamic feel behind the wheel.
44% highway, the rest on surface roads — varied driving throughout.
22 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?
6/10
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 16 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive near South Gex Street.
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 163.3 miles you will encounter 16 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: near the start (South Gex Street): Navigation decision point; at 19.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 155.4 miles: Exit ramp - move to the correct lane early. 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 3h 15m. Total distance: 163.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 15m drive, comfortable solo distance.
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.
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: near the start (South Gex Street): Navigation decision point; at 19.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 155.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Possible but tiring. At 3.3 hours each way, an in-and-out day trip would put you behind the wheel for 6.5 hours — manageable with a long break at O'Fallon, MO, but most travelers stay overnight.
