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

Distance from Dewey, SD to Silt, CO

Distance

502 mi

Time

9 hours 15 mins

Gas Cost

$47 - $91

There are 332.57 miles from Dewey to Silt in southwest direction and 502 miles (807.89 kilometers) by car, following the I-25 route.

Dewey and Silt are 9 hours 15 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Silt, CO.

Dewey, SD and Silt, CO are in the same time zone (MDT). Current time in both locations is 9:08 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Silt, CO? 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 20.17 gallons of gas to cover the route between Dewey, SD and Silt, CO.

The estimated cost of gas to go from Dewey to Silt is $65.80.

During the route, an average car will release 395.22 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 Silt, CO

If you want to meet halfway between Dewey, SD and Silt, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.779663 and -104.986304, or 40º 46' 46.7868" N, 104º 59' 10.6944" W. This location is 251.15 miles away from Dewey, SD and Silt, CO and it would take approximately 4 hours 37 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Wellington, CO, situated 263 miles from Dewey, SD and 240 miles from Silt, CO. It would take 4 hours 49 mins to go from Dewey to Wellington and 4 hours 29 mins to go from Silt to Wellington.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dewey, SD and Silt, CO is Fort Collins, CO, situated 276 miles from Dewey, SD and 236 miles from Silt, CO. It would take 5 hours 6 mins to go from Dewey to Fort Collins and 4 hours 29 mins to go from Silt to Fort Collins.