Shortest distance between Saint John and O'Fallon is 20.17 miles (32.45 km).
Flight distance from Saint John, MO to O'Fallon, MO is 20.17 miles. Estimated flight time is 00 hours 02 minutes.
The driving distance from Saint John, Missouri to O'Fallon, Missouri is: 22.09 miles (35.54 km) by car.
Driving from Saint John to O'Fallon will take approximately 00 hours 26 minutes.
The distance between Saint John and O'Fallon is 36 km if you choose to drive by road. You can go 00 hours 23 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 Saint John and O'Fallon. The current time is 03:21:32.
|Average Speed||Travel Time|
|30 mph (48.3 km/h)||00 hours 44 minutes|
|40 mph (64.37 km/h)||00 hours 33 minutes|
|50 mph (80.47 km/h)||00 hours 26 minutes|
|60 mph (96.56 km/h)||00 hours 22 minutes|
|70 mph (112.65 km/h)||00 hours 18 minutes|
|75 mph (120.7 km/h)||00 hours 17 minutes|
|80 mph (128.75 km/h)||00 hours 16 minutes|
A car with a fuel efficiency of 8.3 l/100 km will need 2.95 liters (0.78 gallon) of gas to cover the route between Saint John and O'Fallon.
The estimated cost of gas to go from Saint John to O'Fallon is $3.2 (diesel $3.78).
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 per gallon of daily gas for calculations is $4.102 (Diesel $4.849) /gallon. Last changed prices on December 08, 2022.
The place names are translated into coordinates to approximate the distance between Saint John 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.