How far is O'Fallon, MO from Sedalia, MO?
The driving distance from O'Fallon, MO to Sedalia, MO is about 158.5 miles (255.1 km), with a travel time of about 03h 06m by car.
- The straight-line flight distance is about 136.4 miles (219.5 km).
- For a round trip, plan for roughly 06h 13m 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 03h 06m.
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.
Human settlement in Callaway County, Missouri, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Slight Chance Showers And Thunderstorms
Partly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between O'Fallon and Sedalia.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Sedalia.
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1
Start on the route
8 m · 7 sec
-
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
139.5 mi · 2 hr 40 min
-
8
Take the exit slight right toward US 65 South: Sedalia
1094 ft · 37 sec
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9
Merge slight left
16.2 mi · 19 min
-
10
Turn slight left onto MO 765
706 ft · 14 sec · MO 765
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11
Continue straight
799 ft · 16 sec
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12
Turn straight onto North Ohio Avenue
1.5 mi · 4 min · North Ohio Avenue
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13
Arrive at your destination
0 m · 1 sec · South Ohio Avenue
Car Route Details
A richer read on the saved driving route between O'Fallon and Sedalia.
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
139 mi · 02h 40m
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.
Partly Sunny then Slight Chance Showers And Thunderstorms leaving O'Fallon and Partly Sunny then Slight Chance Showers And Thunderstorms near Sedalia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Sedalia?
The road trip is about 158.5 miles (255.1 km) and usually takes 03h 06m 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?
Kingdom City is a useful midpoint, sitting about 79.1 miles from O'Fallon and 79.4 miles from Sedalia.
How much longer is the road route than the straight-line distance?
The direct path is about 136.4 miles (219.5 km), while the road route adds roughly 22.1 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 10:46 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $21.08 one way or $42.16 round trip. Estimated CO2 is about 49.7 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Slight Chance Showers And Thunderstorms around O'Fallon and Partly Sunny then Slight Chance Showers And Thunderstorms near Sedalia.
Stop Ideas Near Kingdom City
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 Kingdom City.
Jefferson City
Hermann
Washington
Sedalia
Flight Path Map
This map shows the direct air route between O'Fallon and Sedalia. Straight-line distance: 136.42 mi (219.55 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Sedalia
City in Missouri
| Population | 21,684 |
| Coordinates | 38.7044600, -93.2282600 |
| Altitude | 277 |
| Country | United States |
End: Sedalia (-93.22826, 38.70446)
Estimated Travel Time
Distance: 255 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 16m |
| 40 mph (64.37 km/h) | 03h 57m |
| 50 mph (80.47 km/h) | 03h 10m |
| 60 mph (96.56 km/h) | 02h 38m |
| 70 mph (112.65 km/h) | 02h 15m |
| 80 mph (129 km/h) | 01h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $21.08 | $42.16 |
| Mid-grade | $4.25 | $23.77 | $47.55 |
| Premium | $4.65 | $26.02 | $52.03 |
| Diesel | $5.30 | $29.65 | $59.30 |
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 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.