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

Fastest route

The distance between Arnold, Missouri and O'Fallon, Missouri is approximately 40.7 miles (65.5 kilometers). The fastest route is via I-270 N and I-70 W, which takes about 41 minutes.


To get from Arnold to O'Fallon, follow these directions:

  1. 🚗 Get on I-55 N: Head west on MO-141 N toward Arnold Crossroads Center. Use the right lane to merge onto I-55 N via the ramp to St Louis.
  2. 🚙 Take I-270 N and I-70 W: Continue on I-55 N and then take I-270 N. Merge onto I-70 W.
  3. 🚧 Exit at E Terra Ln: Take exit 218 from I-70 W.
  4. 🛣️ Continue on E Terra Ln: Use the right two lanes to take exit 196 for I-270 W toward Kansas City. Then, take the Kansas City/I-70 E exit toward St Louis. Keep left at the fork and merge onto I-70 W. Take exit 218 toward O'Fallon/Main St.
  5. 🚦 Drive to S Main St: Continue on E Terra Ln and turn right onto S Main St.
  6. 📍 Arrive at your destination: Pass by Firestone Complete Auto Care (on the right) to reach your destination.

Tips & Suggestions

  • 🚗 Consider using a GPS navigation system or a maps app on your phone to help you navigate the route.
  • ⛽ Make sure your vehicle has enough fuel for the journey, especially if you're traveling a long distance.
  • 🕑 Check traffic conditions before starting your trip to ensure a smooth and timely journey.
  • 🚧 Be aware of any road construction or detours that may affect your route. Stay updated on current road conditions.
  • 📱 Keep your mobile phone charged and easily accessible for emergencies or if you need to make a call.
  • 🚦 Observe traffic laws and regulations, including speed limits, for a safe and legal journey.
  • 🚙 Consider bringing snacks, drinks, and entertainment for a comfortable trip, especially if you're traveling with children.

Distance by Flight

Shortest distance between Arnold and O'Fallon is 31.37 miles (50.48 km).

Flight distance from Arnold, MO to O'Fallon, MO is 31.37 miles. Estimated flight time is 00 hours 05 minutes.

Driving distance

The driving distance from Arnold, Missouri to O'Fallon, Missouri is: 41.58 miles (66.92 km) by car.

Driving from Arnold to O'Fallon will take approximately 00 hours 43 minutes.

O'Fallon image
#1 Arnold

City in Missouri

Population 21145
GPS Coordinates 38°25'58"N 90°22'39"W
Latitude 38.4328300
Longitude -90.3776200
Altitude 184
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 Arnold and O'Fallon

The distance between Arnold and O'Fallon is 67 km if you choose to drive by road. You can go 00 hours 44 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 Arnold and O'Fallon. The current time is 12:23:10.

Average Speed Travel Time
30 mph (48.3 km/h) 01 hours 23 minutes
40 mph (64.37 km/h) 01 hours 02 minutes
50 mph (80.47 km/h) 00 hours 49 minutes
60 mph (96.56 km/h) 00 hours 41 minutes
70 mph (112.65 km/h) 00 hours 35 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 5.55 liters (1.47 gallon) of gas to cover the route between Arnold and O'Fallon.
The estimated cost of gas to go from Arnold to O'Fallon is $5.21 (diesel $6.17).

Missouri gas prices.

Gasoline Mid Grade Premium Diesel
Gallon $3.55 $3.87 $4.2 $4.21
Total $5.21 $5.68 $6.16 $6.17

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 $3.550 (Diesel $4.207) /gallon. Last changed prices on September 28, 2023.

How did we calculate the distance?

The place names are translated into coordinates to approximate the distance between Arnold 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 New York, MO to Arnold 260.52 miles (419 km)

O'Fallon image

Driving distance from Blue Springs, MO to Arnold 235.36 miles (379 km)

O'Fallon image

Driving distance from Cape Girardeau, MO to Arnold 101.89 miles (164 km)

Driving distance from Castle Point, MO to Arnold 30.45 miles (49 km)

O'Fallon image

Driving distance from Chesterfield, MO to Arnold 26.12 miles (42 km)

O'Fallon image

Driving distance from Columbia, MO to Arnold 129.05 miles (208 km)

Driving distance from East Independence, MO to Arnold 244.09 miles (393 km)

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Driving distance from Florissant, MO to Arnold 34.81 miles (56 km)

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Driving distance from Independence, MO to Arnold 244.24 miles (393 km)

O'Fallon image

Driving distance from Jefferson City, MO to Arnold 137.36 miles (221 km)

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Driving distance from Joplin, MO to Arnold 276.65 miles (445 km)

O'Fallon image

Driving distance from Kansas City, MO to Arnold 252.22 miles (406 km)

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