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

Distance from Dewey, SD to Alpine, WY

Distance

497 mi

Time

9 hours 56 mins

Gas Cost

$46 - $90

There are 351.29 miles from Dewey to Alpine in west direction and 497 miles (799.84 kilometers) by car, following the US-20 and US-26 route.

Dewey and Alpine are 9 hours 56 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Alpine, WY.

Dewey, SD and Alpine, WY are in the same time zone (MDT). Current time in both locations is 3:18 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Alpine, WY? 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 19.96 gallons of gas to cover the route between Dewey, SD and Alpine, WY.

The estimated cost of gas to go from Dewey to Alpine is $65.10.

During the route, an average car will release 390.99 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 Alpine, WY

If you want to meet halfway between Dewey, SD and Alpine, WY or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.139385 and -107.60862, or 43º 8' 21.786" N, 107º 36' 31.032" W. This location is 248.46 miles away from Dewey, SD and Alpine, WY and it would take approximately 4 hours 58 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Moneta, WY, situated 254 miles from Dewey, SD and 243 miles from Alpine, WY. It would take 4 hours 59 mins to go from Dewey to Moneta and 4 hours 57 mins to go from Alpine to Moneta.