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

Distance from Dewey, SD to Lamont, MI

Distance

1,043 mi

Time

19 hours 49 mins

Gas Cost

$97 - $189

There are 911.25 miles from Dewey to Lamont in east direction and 1,043 miles (1,678.55 kilometers) by car and ferry, following the I-90 and US-14 route.

Dewey and Lamont are 19 hours 49 mins far apart, if you drive non-stop for 17 hours 19 mins and take a ferry for 2 hours 30 mins .

This is the fastest route from Dewey, SD to Lamont, MI. The halfway point is Jackson, MN.

Please note the time difference between Dewey, SD and Lamont, MI is 2 hours. The current time in Dewey is 9:10 am and the current time in Lamont is 11:10 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Lamont, MI? 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 41.89 gallons of gas to cover the route between Dewey, SD and Lamont, MI.

The estimated cost of gas to go from Dewey to Lamont is $136.65.

During the route, an average car will release 820.73 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 Lamont, MI

If you want to meet halfway between Dewey, SD and Lamont, MI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.640053 and -94.992126, or 43º 38' 24.1908" N, 94º 59' 31.6536" W. This location is 521.54 miles away from Dewey, SD and Lamont, MI and it would take approximately 9 hours 54 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Jackson, MN, situated 520 miles from Dewey, SD and 526 miles from Lamont, MI. It would take 7 hours 44 mins to go from Dewey to Jackson and 9 hours 17 mins to go from Lamont to Jackson.