Distance between cities › USA › Montana › Pray, MT › Distance from Pray to De Smet Book Hotels

Distance from Pray, MT to De Smet, SD

Distance

800 mi

Time

13 hours 52 mins

Gas Cost

$75 - $145

There are 645.78 miles from Pray to De Smet in east direction and 800 miles (1,287.48 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Pray and De Smet are 13 hours 52 mins far apart, if you drive non-stop .

This is the fastest route from Pray, MT to De Smet, SD. The halfway point is Sundance, WY.

Please note the time difference between Pray, MT and De Smet, SD is 1 hour. The current time in Pray is 6:10 am and the current time in De Smet is 7:10 am.

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Lowest Price Rental Cars in Pray, MT

Planning on renting a car to go from Pray, MT to De Smet, SD? Here there are some offers to rent a car in Pray, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Pray »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 32.12 gallons of gas to cover the route between Pray, MT and De Smet, SD.

The estimated cost of gas to go from Pray to De Smet is $104.76.

During the route, an average car will release 629.22 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 Pray, MT and De Smet, SD

If you want to meet halfway between Pray, MT and De Smet, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.483654 and -104.272438, or 44º 29' 1.1544" N, 104º 16' 20.7768" W. This location is 399.85 miles away from Pray, MT and De Smet, SD and it would take approximately 6 hours 56 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sundance, WY, situated 430 miles from Pray, MT and 424 miles from De Smet, SD. It would take 6 hours 40 mins to go from Pray to Sundance and 6 hours 25 mins to go from De Smet to Sundance.