Distance between cities › USA › California › Newcastle, CA › Distance from Newcastle to Dewey Book Hotels

Distance from Newcastle, CA to Dewey, SD

Distance

1,205 mi

Time

20 hours 58 mins

Gas Cost

$112 - $218

There are 942.94 miles from Newcastle to Dewey in northeast direction and 1,205 miles (1,939.26 kilometers) by car, following the I-80 route.

Newcastle and Dewey are 20 hours 58 mins far apart, if you drive non-stop .

This is the fastest route from Newcastle, CA to Dewey, SD.

Please note the time difference between Newcastle, CA and Dewey, SD is 1 hour. The current time in Newcastle is 10:21 pm and the current time in Dewey is 11:21 pm.

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Lowest Price Rental Cars in Newcastle, CA

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Newcastle »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 48.39 gallons of gas to cover the route between Newcastle, CA and Dewey, SD.

The estimated cost of gas to go from Newcastle to Dewey is $157.84.

During the route, an average car will release 948.01 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 Newcastle, CA and Dewey, SD

If you want to meet halfway between Newcastle, CA and Dewey, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.770673 and -112.131683, or 40º 46' 14.4228" N, 112º 7' 54.0588" W. This location is 602.43 miles away from Newcastle, CA and Dewey, SD and it would take approximately 10 hours 29 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Magna, UT, situated 608 miles from Newcastle, CA and 595 miles from Dewey, SD. It would take 10 hours 14 mins to go from Newcastle to Magna and 10 hours 49 mins to go from Dewey to Magna.

Major City Closest to Halfway Point

The major city closest to the halfway point between Newcastle, CA and Dewey, SD is Salt Lake City, UT, situated 620 miles from Newcastle, CA and 586 miles from Dewey, SD. It would take 10 hours 25 mins to go from Newcastle to Salt Lake City and 10 hours 41 mins to go from Dewey to Salt Lake City.