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

Distance from Dewey, SD to Round Mountain, NV

Distance

1,035 mi

Time

18 hours 20 mins

Gas Cost

$96 - $188

There are 754.26 miles from Dewey to Round Mountain in southwest direction and 1,035 miles (1,665.67 kilometers) by car, following the I-80 and US-30 and WY 789 route.

Dewey and Round Mountain are 18 hours 20 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Round Mountain, NV.

Please note the time difference between Dewey, SD and Round Mountain, NV is 1 hour. The current time in Dewey is 3:31 am and the current time in Round Mountain is 2:31 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Round Mountain, NV? 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 41.55 gallons of gas to cover the route between Dewey, SD and Round Mountain, NV.

The estimated cost of gas to go from Dewey to Round Mountain is $135.55.

During the route, an average car will release 814.13 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 Dewey, SD and Round Mountain, NV

If you want to meet halfway between Dewey, SD and Round Mountain, NV or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.247643 and -111.017209, or 41º 14' 51.5148" N, 111º 1' 1.9524" W. This location is 517.35 miles away from Dewey, SD and Round Mountain, NV and it would take approximately 9 hours 10 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Evanston, WY, situated 504 miles from Dewey, SD and 532 miles from Round Mountain, NV. It would take 9 hours 14 mins to go from Dewey to Evanston and 9 hours 10 mins to go from Round Mountain to Evanston.