How far is O'Fallon, MO from Weatherby Lake, MO?
The driving distance from O'Fallon, MO to Weatherby Lake, MO is about 235.5 miles (379 km), with a travel time of about 04h 31m by car.
- The straight-line flight distance is about 216.5 miles (348.4 km).
- For a round trip, plan for roughly 09h 03m 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 31m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
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.
Sunny
Driving Route Map
The map below follows the saved road route between O'Fallon and Weatherby Lake.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Weatherby Lake.
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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
200.7 mi · 3 hr 46 min
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8
Continue on Truman/Eisenhower Presidential Highway
2.7 mi · 3 min · Truman/Eisenhower Presidential Highway
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9
Continue on Clifton J. Scott Memorial Highway
1.8 mi · 2 min · Clifton J. Scott Memorial Highway
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10
Continue on Truman/Eisenhower Presidential Highway
2.9 mi · 3 min · Truman/Eisenhower Presidential Highway
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11
Continue on George Brett Super Highway
1.4 km · 58 sec · George Brett Super Highway
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12
Take the exit slight right toward I 435 North, US 24 East: Des Moines
1.1 mi · 2 min
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13
Merge slight left onto Lamar Hunt Memorial Highway
7.8 mi · 9 min · Lamar Hunt Memorial Highway
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14
Continue on I435 N
1.3 mi · 1 min · I435 N
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15
Continue straight
3.3 mi · 4 min
-
16
Take the exit slight right toward MO 152 West
1696 ft · 48 sec
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17
Merge slight left onto Alexander Doniphan Memorial Highway
10 mi · 12 min · Alexander Doniphan Memorial Highway
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18
Take the exit slight right toward Amity Avenue
1228 ft · 26 sec
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19
Turn left onto North Amity Avenue
2898 ft · 1 min · North Amity Avenue
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20
Turn right onto Northwest Barry Road
2201 ft · 47 sec · Northwest Barry Road
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21
Turn left onto Northwest Potomac Avenue
1.1 km · 3 min · Northwest Potomac Avenue
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22
Arrive at your destination
0 m · 1 sec · Northwest Potomac Avenue
Car Route Details
A richer read on the saved driving route between O'Fallon and Weatherby Lake.
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
201 mi · 03h 46m
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.
Sunny leaving O'Fallon and Sunny near Weatherby Lake.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Weatherby Lake?
The road trip is about 235.5 miles (379 km) and usually takes 04h 31m 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 117.5 miles from O'Fallon and 118 miles from Weatherby Lake.
How much longer is the road route than the straight-line distance?
The direct path is about 216.5 miles (348.4 km), while the road route adds roughly 19 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 7:56 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $31.34 one way or $62.67 round trip. Estimated CO2 is about 73.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around O'Fallon and Sunny near Weatherby Lake.
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 Weatherby Lake. Straight-line distance: 216.51 mi (348.44 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Weatherby Lake
City in Platte County, Missouri
| Population | 2,086 |
| Coordinates | 39.2377800, -94.6960700 |
| Altitude | 278 |
| Country | United States |
End: Weatherby Lake (-94.69607, 39.23778)
Estimated Travel Time
Distance: 379 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 50m |
| 40 mph (64.37 km/h) | 05h 53m |
| 50 mph (80.47 km/h) | 04h 42m |
| 60 mph (96.56 km/h) | 03h 55m |
| 70 mph (112.65 km/h) | 03h 21m |
| 80 mph (129 km/h) | 02h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $31.34 | $62.67 |
| Mid-grade | $4.25 | $35.34 | $70.68 |
| Premium | $4.65 | $38.67 | $77.35 |
| Diesel | $5.30 | $44.08 | $88.15 |
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 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.