How far is O'Fallon, MO from Centralia, MO?
The driving distance from O'Fallon, MO to Centralia, MO is about 102.9 miles (165.6 km), with a travel time of about 02h 07m by car.
- The straight-line flight distance is about 82 miles (132 km).
- For a round trip, plan for roughly 04h 14m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 07m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between O'Fallon and Centralia.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Centralia.
-
1
Start on the route
8 m · 7 sec
-
2
Turn left onto South Main Street
3116 ft · 2 min · South Main Street
-
3
Turn left onto I 70 East
10 m · 6 sec
-
4
Turn sharp left onto South Main Street
87 m · 11 sec · South Main Street
-
5
Turn left onto West Terra Lane
576 ft · 12 sec · West Terra Lane
-
6
Take the ramp straight toward I 70 West
146 m · 7 sec
-
7
Merge slight left
69.4 mi · 1 hr 20 min
-
8
Take the exit slight right toward US 54: Auxvasse, Mexico, Fulton
1033 ft · 22 sec
-
9
Turn right
13.3 mi · 15 min
-
10
Take the exit slight right toward US 54 Business, MO 15, MO 22: Mexico
1135 ft · 34 sec
-
11
Turn left
3.3 mi · 5 min
-
12
Turn left onto West Boulevard Street
975 ft · 19 sec · West Boulevard Street
-
13
Turn right onto South Muldrow Street
1.1 km · 1 min · South Muldrow Street
-
14
Turn left onto West Monroe Street
13.8 mi · 21 min · West Monroe Street
-
15
Turn left onto North Jefferson Street
2957 ft · 1 min · North Jefferson Street
-
16
Turn right onto East Singleton Street
1119 ft · 36 sec · East Singleton Street
-
17
Turn left onto South Rollins Street
120 m · 17 sec · South Rollins Street
-
18
Arrive at your destination
0 m · 1 sec · South Rollins Street
Car Route Details
A richer read on the saved driving route between O'Fallon and Centralia.
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
69.4 mi · 01h 20m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Sunny leaving O'Fallon and Mostly Sunny then Slight Chance Showers And Thunderstorms near Centralia.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Centralia?
The road trip is about 102.9 miles (165.6 km) and usually takes 02h 07m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Montgomery City is a useful midpoint, sitting about 51.4 miles from O'Fallon and 51.5 miles from Centralia.
How much longer is the road route than the straight-line distance?
The direct path is about 82 miles (132 km), while the road route adds roughly 20.9 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 2:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.69 one way or $27.38 round trip. Estimated CO2 is about 32.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around O'Fallon and Mostly Sunny then Slight Chance Showers And Thunderstorms near Centralia.
Stop Ideas Near Montgomery 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 Montgomery City.
Hermann
Washington
Jefferson City
Kirkwood
Flight Path Map
This map shows the direct air route between O'Fallon and Centralia. Straight-line distance: 82 mi (131.96 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Centralia
City in Missouri
| Population | 4,344 |
| Coordinates | 39.2103200, -92.1379500 |
| Altitude | 269 |
| Country | United States |
End: Centralia (-92.13795, 39.21032)
Estimated Travel Time
Distance: 166 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 25m |
| 40 mph (64.37 km/h) | 02h 34m |
| 50 mph (80.47 km/h) | 02h 03m |
| 60 mph (96.56 km/h) | 01h 42m |
| 70 mph (112.65 km/h) | 01h 28m |
| 80 mph (129 km/h) | 01h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $13.69 | $27.38 |
| Mid-grade | $4.25 | $15.44 | $30.88 |
| Premium | $4.65 | $16.89 | $33.79 |
| Diesel | $5.30 | $19.25 | $38.51 |
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 · Apr 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.