How far is Union, MO from O'Fallon, MO?

Distance by Flight

Shortest distance between Union and O'Fallon is 29.97 miles (48.23 km).

Flight distance from Union, MO to O'Fallon, MO is 29.97 miles. Estimated flight time is 00 hours 05 minutes.

Driving distance

The driving distance from Union, Missouri to O'Fallon, Missouri is: 42.46 miles (68.33 km) by car.

Driving from Union to O'Fallon will take approximately 00 hours 53 minutes.

O'Fallon image
#1 Union

City in and county seat of Franklin County, Missouri, United States

Population 12094
GPS Coordinates 38°27'0"N 91°0'31"W
Latitude 38.4500500
Longitude -91.0084800
Altitude 162
Country United States
O'Fallon image
#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

Estimated Travel Time Between Union and O'Fallon

The distance between Union and O'Fallon is 68 km if you choose to drive by road. You can go 00 hours 45 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 Union and O'Fallon. The current time is 20:22:54.

Average Speed Travel Time
30 mph (48.3 km/h) 01 hours 24 minutes
40 mph (64.37 km/h) 01 hours 03 minutes
50 mph (80.47 km/h) 00 hours 50 minutes
60 mph (96.56 km/h) 00 hours 42 minutes
70 mph (112.65 km/h) 00 hours 36 minutes
75 mph (120.7 km/h) 00 hours 33 minutes
80 mph (128.75 km/h) 00 hours 31 minutes

Gas Consumption

A car with a fuel efficiency of 8.3 l/100 km will need 5.67 liters (1.5 gallon) of gas to cover the route between Union and O'Fallon.
The estimated cost of gas to go from Union to O'Fallon is $4.8 (diesel $6.63).

Missouri gas prices.

Gasoline Mid Grade Premium Diesel
Gallon $3.21 $3.54 $3.86 $4.43
Total $4.8 $5.3 $5.78 $6.63

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 March 28, 2024.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Union 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

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Driving distance from Blue Springs, MO to Union 205.34 miles (330 km)

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Driving distance from Cape Girardeau, MO to Union 134.91 miles (217 km)

Driving distance from Castle Point, MO to Union 61.49 miles (99 km)

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Driving distance from Chesterfield, MO to Union 34.92 miles (56 km)

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Driving distance from Columbia, MO to Union 99.02 miles (159 km)

Driving distance from East Independence, MO to Union 214.06 miles (345 km)

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Driving distance from Florissant, MO to Union 58.34 miles (94 km)

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Driving distance from Independence, MO to Union 214.21 miles (345 km)

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Driving distance from Jefferson City, MO to Union 76.74 miles (124 km)

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Driving distance from Joplin, MO to Union 240.27 miles (387 km)

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Driving distance from Kansas City, MO to Union 222.19 miles (358 km)

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Driving distance from Lee's Summit, MO to Union 203.82 miles (328 km)

Gas Cost Calculator