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

Distance from Dewey, SD to Saint Lawrence, SD

Distance

354 mi

Time

6 hours 49 mins

Gas Cost

$32 - $62

There are 262.48 miles from Dewey to Saint Lawrence in northeast direction and 354 miles (569.71 kilometers) by car, following the I-90 and US-14 route.

Dewey and Saint Lawrence are 6 hours 49 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Saint Lawrence, SD.

Please note the time difference between Dewey, SD and Saint Lawrence, SD is 1 hour. The current time in Dewey is 4:39 am and the current time in Saint Lawrence is 5:39 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Saint Lawrence, SD? 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 14.21 gallons of gas to cover the route between Dewey, SD and Saint Lawrence, SD.

The estimated cost of gas to go from Dewey to Saint Lawrence is $44.55.

During the route, an average car will release 278.41 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Dewey, SD and Saint Lawrence, SD

If you want to meet halfway between Dewey, SD and Saint Lawrence, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.835992 and -101.560283, or 43º 50' 9.5712" N, 101º 33' 37.0188" W. This location is 176.92 miles away from Dewey, SD and Saint Lawrence, SD and it would take approximately 3 hours 24 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Kadoka, SD, situated 184 miles from Dewey, SD and 171 miles from Saint Lawrence, SD. It would take 3 hours 48 mins to go from Dewey to Kadoka and 3 hours 6 mins to go from Saint Lawrence to Kadoka.