How far is O'Fallon, MO from Lathrop, MO?
The driving distance from O'Fallon, MO to Lathrop, MO is about 230.6 miles (371.1 km), with a travel time of about 04h 37m by car.
- The straight-line flight distance is about 201 miles (323.4 km).
- For a round trip, plan for roughly 09h 14m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 04h 37m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Cooper County, Missouri, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between O'Fallon and Lathrop.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Lathrop.
-
1
Start on the route
8 m · 7 sec
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2
Turn left onto South Main Street
3116 ft · 2 min · South Main Street
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3
Turn left onto I 70 East
10 m · 6 sec
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4
Turn sharp left onto South Main Street
87 m · 11 sec · South Main Street
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5
Turn left onto West Terra Lane
576 ft · 12 sec · West Terra Lane
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6
Take the ramp straight toward I 70 West
146 m · 7 sec
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7
Merge slight left
168 mi · 3 hr 11 min
-
8
Take the exit slight right toward MO 13: Higginsville, Warrensburg
1012 ft · 26 sec
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9
Turn right
45.1 mi · 1 hr 2 min
-
10
Turn left onto West Elm Street
10.5 mi · 14 min · West Elm Street
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11
Enter the roundabout and take exit 2 toward the route
36 m · 2 sec
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12
Exit the roundabout
5.2 mi · 7 min
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13
Turn left onto Center Street
1 km · 1 min · Center Street
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14
Turn right onto Oak Street
84 m · 12 sec · Oak Street
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15
Arrive at your destination
0 m · 1 sec · Oak Street
Car Route Details
A richer read on the saved driving route between O'Fallon and Lathrop.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 70 West
Merge slight left
168 mi · 03h 11m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Showers And Thunderstorms leaving O'Fallon and Showers And Thunderstorms Likely near Lathrop.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Lathrop?
The road trip is about 230.6 miles (371.1 km) and usually takes 04h 37m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Boonville is a useful midpoint, sitting about 115.1 miles from O'Fallon and 115.5 miles from Lathrop.
How much longer is the road route than the straight-line distance?
The direct path is about 201 miles (323.4 km), while the road route adds roughly 29.6 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 7:46 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.70 one way or $61.39 round trip. Estimated CO2 is about 72.3 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around O'Fallon and Showers And Thunderstorms Likely near Lathrop.
Stop Ideas Near Boonville
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Boonville.
Sedalia
Jefferson City
Warrensburg
Hermann
Flight Path Map
This map shows the direct air route between O'Fallon and Lathrop. Straight-line distance: 200.98 mi (323.44 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Lathrop
City in Clinton County, Missouri, United States
| Population | 2,019 |
| Coordinates | 39.5483400, -94.3299500 |
| Altitude | 324 |
| Country | United States |
End: Lathrop (-94.32995, 39.54834)
Estimated Travel Time
Distance: 371 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 40m |
| 40 mph (64.37 km/h) | 05h 45m |
| 50 mph (80.47 km/h) | 04h 36m |
| 60 mph (96.56 km/h) | 03h 50m |
| 70 mph (112.65 km/h) | 03h 17m |
| 80 mph (129 km/h) | 02h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $30.70 | $61.39 |
| Mid-grade | $4.25 | $34.62 | $69.24 |
| Premium | $4.65 | $37.88 | $75.77 |
| Diesel | $5.30 | $43.17 | $86.35 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Missouri · May 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.