Distance between cities › USA › South Dakota › Dewey, SD › Distance from Dewey to Fairfax Book Hotels

Distance from Dewey, SD to Fairfax, SD

Distance

362 mi

Time

7 hours 21 mins

Gas Cost

$32 - $63

There are 261.46 miles from Dewey to Fairfax in east direction and 362 miles (582.58 kilometers) by car, following the I-90 and US-14 route.

Dewey and Fairfax are 7 hours 21 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Fairfax, SD. The halfway point is Merriman, NE.

Please note the time difference between Dewey, SD and Fairfax, SD is 1 hour. The current time in Dewey is 4:36 am and the current time in Fairfax is 5:36 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Dewey, SD to Fairfax, SD:

Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Fairfax, SD? Here there are some offers to rent a car in Dewey, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dewey »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 14.55 gallons of gas to cover the route between Dewey, SD and Fairfax, SD.

The estimated cost of gas to go from Dewey to Fairfax is $45.61.

During the route, an average car will release 285.04 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Dewey, SD and Fairfax, SD

If you want to meet halfway between Dewey, SD and Fairfax, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.922749 and -101.623016, or 42º 55' 21.8964" N, 101º 37' 22.8576" W. This location is 181.13 miles away from Dewey, SD and Fairfax, SD and it would take approximately 3 hours 40 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Merriman, NE, situated 168 miles from Dewey, SD and 167 miles from Fairfax, SD. It would take 3 hours 29 mins to go from Dewey to Merriman and 2 hours 57 mins to go from Fairfax to Merriman.