Distance between cities › USA › California › Davis, CA › Distance from Davis to O Fallon Book Hotels

Distance from Davis, CA to O Fallon, MO

Distance

1,956 mi

Time

1 day 9 hours

Gas Cost

$182 - $355

There are 1,666.31 miles from Davis to O Fallon in east direction and 1,956 miles (3,147.88 kilometers) by car, following the I-80 route.

Davis and O Fallon are 1 day 9 hours far apart, if you drive non-stop .

This is the fastest route from Davis, CA to O Fallon, MO.

Please note the time difference between Davis, CA and O Fallon, MO is 2 hours. The current time in Davis is 8:52 am and the current time in O Fallon is 10:52 am.

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Lowest Price Rental Cars in Davis, CA

Planning on renting a car to go from Davis, CA to O Fallon, MO? Here there are some offers to rent a car in Davis, CA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Davis »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 78.57 gallons of gas to cover the route between Davis, CA and O Fallon, MO.

The estimated cost of gas to go from Davis to O Fallon is $256.31.

During the route, an average car will release 1,539.40 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Davis, CA and O Fallon, MO

If you want to meet halfway between Davis, CA and O Fallon, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.741 and -106.567991, or 41º 44' 27.6" N, 106º 34' 4.7676" W. This location is 978.23 miles away from Davis, CA and O Fallon, MO and it would take approximately 16 hours 47 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Elk Mountain, WY, situated 998 miles from Davis, CA and 960 miles from O Fallon, MO. It would take 16 hours 48 mins to go from Davis to Elk Mountain and 16 hours 55 mins to go from O Fallon to Elk Mountain.