How far is Bethany, MO from O'Fallon, MO?
Distance by Flight
Shortest distance between Bethany and O'Fallon is 203.93 miles (328.2 km).
Flight distance from Bethany, MO to O'Fallon, MO is 203.93 miles. Estimated flight time is 00 hours 31 minutes.
It takes 00 hours 28 minutes to travel from Bethany to O'Fallon with an airplane (average speed of 550 miles).
Driving distance
The driving distance from Bethany, Missouri to O'Fallon, Missouri is: 258.74 miles (416.41 km) by car.
Driving from Bethany to O'Fallon will take approximately 04 hours 25 minutes.
#1 Bethany
| Population | |
|---|---|
| GPS Coordinates | 40°16'6"N 94°1'42"W |
| Latitude | 40.2683300 |
| Longitude | -94.0282900 |
| Altitude | 272 |
| Country | United States |
#2 O'Fallon
The most populous city in St. Charles County, Missouri. It is located in the eastern part of the county. O'Fallon is known for its many parks and green spaces, its many historical sites, and its many attractions, such as the O'Fallon City Hall and the O'Fallon History Museum.
| Population | 89769 |
|---|---|
| GPS Coordinates | 38°48'38"N 90°41'59"W |
| Latitude | 38.8106100 |
| Longitude | -90.6998500 |
| Altitude | 165 |
| Country | United States |
Ending point in O'Fallon: (-90.699849,38.810674)
Estimated Travel Time Between Bethany and O'Fallon
The distance between Bethany and O'Fallon is 416 km if you choose to drive by road. You can go 04 hours 37 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.
There is no time difference between Bethany and O'Fallon. The current time is 01:49:44.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 08 hours 37 minutes |
| 40 mph (64.37 km/h) | 06 hours 28 minutes |
| 50 mph (80.47 km/h) | 05 hours 10 minutes |
| 60 mph (96.56 km/h) | 04 hours 18 minutes |
| 70 mph (112.65 km/h) | 03 hours 41 minutes |
| 75 mph (120.7 km/h) | 03 hours 26 minutes |
| 80 mph (128.75 km/h) | 03 hours 13 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 34.56 liters (9.13 gallon) of gas to cover the route between Bethany and O'Fallon.
The estimated cost of gas to go from Bethany to O'Fallon is $29.26 (diesel $40.41).
Missouri gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.21 | $3.54 | $3.86 | $4.43 |
| Total | $29.26 | $32.28 | $35.24 | $40.41 |
Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.
The average gas price (in Missouri ) per gallon of daily gas for calculations is $3.205 (Diesel $4.426) /gallon. Last changed prices on December 29, 2025.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between Bethany and O'Fallon (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.
Distance to Other Cities
Driving distance from Castle Point, MO to Bethany 287.9 miles (463 km)
Driving distance from East Independence, MO to Bethany 88.86 miles (143 km)
