How far is St. Louis, MO from O'Fallon, MO?
Distance by Flight
Shortest distance between St. Louis and O'Fallon is 29.88 miles (48.08 km).
Flight distance from St. Louis, MO to O'Fallon, MO is 29.88 miles. Estimated flight time is 00 hours 04 minutes.
Driving distance
The driving distance from St. Louis, Missouri to O'Fallon, Missouri is: 34.06 miles (54.81 km) by car.
Driving from St. Louis to O'Fallon will take approximately 00 hours 38 minutes.
#1 St. Louis
The second most populous city in Missouri and the center of the St. Louis metropolitan area. It is located on the Mississippi River in eastern Missouri. St. Louis is known for its Gateway Arch, its baseball team, the St. Louis Cardinals, and its many attractions, such as the St. Louis Zoo and the Missouri Botanical Garden.
| Population | 315685 |
|---|---|
| GPS Coordinates | 38°37'38"N 90°11'52"W |
| Latitude | 38.6272700 |
| Longitude | -90.1978900 |
| Altitude | 142 |
| 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 St. Louis and O'Fallon
The distance between St. Louis and O'Fallon is 55 km if you choose to drive by road. You can go 00 hours 36 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 St. Louis and O'Fallon. The current time is 05:30:04.
| Average Speed | Travel Time |
|---|---|
| 30 mph (48.3 km/h) | 01 hours 08 minutes |
| 40 mph (64.37 km/h) | 00 hours 51 minutes |
| 50 mph (80.47 km/h) | 00 hours 40 minutes |
| 60 mph (96.56 km/h) | 00 hours 34 minutes |
| 70 mph (112.65 km/h) | 00 hours 29 minutes |
| 75 mph (120.7 km/h) | 00 hours 27 minutes |
| 80 mph (128.75 km/h) | 00 hours 25 minutes |
Gas Consumption
A car with a fuel efficiency of 8.3 l/100 km will need 4.55 liters (1.2 gallon) of gas to cover the route between St. Louis and O'Fallon.
The estimated cost of gas to go from St. Louis to O'Fallon is $3.85 (diesel $5.32).
Missouri gas prices.
| Gasoline | Mid Grade | Premium | Diesel | |
|---|---|---|---|---|
| Gallon | $3.21 | $3.54 | $3.86 | $4.43 |
| Total | $3.85 | $4.25 | $4.64 | $5.32 |
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 April 19, 2024.
How did we calculate the distance?
The place names are translated into coordinates to approximate the distance between St. Louis 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 St. Louis 12.29 miles (20 km)
Driving distance from East Independence, MO to St. Louis 239.88 miles (386 km)
