How far is Richland, MO from O'Fallon, MO?
The driving distance from Richland, MO to O'Fallon, MO is about 144.9 miles (233.2 km), with a travel time of about 02h 32m by car.
- The straight-line flight distance is about 113.5 miles (182.6 km).
- For a round trip, plan for roughly 05h 04m 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 32m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Village in Crawford County, Missouri
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Richland and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Richland and O'Fallon.
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1
Start on South Pine Street
1348 ft · 25 sec · South Pine Street
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2
Turn slight right onto East Jefferson Avenue
8.8 mi · 13 min · East Jefferson Avenue
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3
Take the ramp left toward I 44 East: Rolla
1141 ft · 28 sec
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4
Merge slight left
102.3 mi · 1 hr 50 min
-
5
Take the exit slight right toward I 44 Business, MO 100 East: Gray Summit
970 ft · 28 sec
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6
Turn left onto Manchester Road
13.4 mi · 19 min · Manchester Road
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7
Take the exit slight right toward MO 109
1108 ft · 31 sec
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8
Enter the roundabout and take exit 3 toward the route
68 m · 4 sec
-
9
Exit the roundabout
157 m · 11 sec
-
10
Enter the roundabout and take exit 1 toward the route
30 m · 2 sec
-
11
Exit the roundabout
2129 ft · 45 sec
-
12
Enter the roundabout and take exit 2 toward the route
29 m · 2 sec
-
13
Exit the roundabout
4.3 mi · 7 min
-
14
Enter the roundabout and take exit 2 toward South Eatherton Road
29 m · 1 sec · South Eatherton Road
-
15
Exit the roundabout onto South Eatherton Road
2.4 mi · 5 min · South Eatherton Road
-
16
Continue on Olive Street Road
1.5 km · 2 min · Olive Street Road
-
17
Take the ramp left toward Chesterfield Airport Road
1.1 km · 1 min · Chesterfield Airport Road
-
18
Merge slight left onto Avenue of the Saints
3.1 mi · 4 min · Avenue of the Saints
-
19
Take the exit slight right toward MO K: O'Fallon
100 m · 6 sec
-
20
Merge slight right onto North Outer Road
1650 ft · 31 sec · North Outer Road
-
21
Continue on North Outer Road
946 ft · 18 sec · North Outer Road
-
22
Turn right
3.3 mi · 5 min
-
23
Continue straight
1.5 mi · 3 min
-
24
Continue straight
1.6 mi · 3 min
-
25
Continue on South Main Street
3115 ft · 2 min · South Main Street
-
26
Turn right
8 m · 2 sec
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27
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Richland and O'Fallon.
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 44 East
Merge slight left
102 mi · 01h 50m
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 Richland and Mostly Sunny near O'Fallon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Richland to O'Fallon?
The road trip is about 144.9 miles (233.2 km) and usually takes 02h 32m 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?
Leasburg is a useful midpoint, sitting about 72.4 miles from Richland and 72.6 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 113.5 miles (182.6 km), while the road route adds roughly 31.4 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 1:26 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.27 one way or $38.54 round trip. Estimated CO2 is about 45.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Richland and Mostly Sunny near O'Fallon.
Stop Ideas Near Leasburg
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 Leasburg.
Washington
Hermann
Jefferson City
Kirkwood
Flight Path Map
This map shows the direct air route between Richland and O'Fallon. Straight-line distance: 113.47 mi (182.61 km).
#1 Richland
City in Missouri parts of witch are in Camden, Laclede, and Pulaski Counties
| Population | 1,800 |
| Coordinates | 37.8569800, -92.4043400 |
| Altitude | 346 |
| Country | United States |
#2 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
End: (-90.699849, 38.810674)
Estimated Travel Time
Distance: 233 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 49m |
| 40 mph (64.37 km/h) | 03h 37m |
| 50 mph (80.47 km/h) | 02h 53m |
| 60 mph (96.56 km/h) | 02h 24m |
| 70 mph (112.65 km/h) | 02h 04m |
| 80 mph (129 km/h) | 01h 48m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $19.27 | $38.54 |
| Mid-grade | $4.25 | $21.73 | $43.47 |
| Premium | $4.65 | $23.78 | $47.56 |
| Diesel | $5.30 | $27.10 | $54.21 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.