Distance between cities › USA › South Dakota › Selby, SD › Distance from Selby to Sun River Book Hotels

Distance from Selby, SD to Sun River, MT

Distance

686 mi

Time

12 hours 14 mins

Gas Cost

$64 - $124

There are 572.49 miles from Selby to Sun River in northwest direction and 686 miles (1,104.01 kilometers) by car, following the MT 200 S route.

Selby and Sun River are 12 hours 14 mins far apart, if you drive non-stop .

This is the fastest route from Selby, SD to Sun River, MT. The halfway point is Circle, MT.

Please note the time difference between Selby, SD and Sun River, MT is 1 hour. The current time in Selby is 8:44 am and the current time in Sun River is 7:44 am.

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Lowest Price Rental Cars in Selby, SD

Planning on renting a car to go from Selby, SD to Sun River, MT? Here there are some offers to rent a car in Selby, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Selby »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 27.56 gallons of gas to cover the route between Selby, SD and Sun River, MT.

The estimated cost of gas to go from Selby to Sun River is $89.89.

During the route, an average car will release 539.91 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 Selby, SD and Sun River, MT

If you want to meet halfway between Selby, SD and Sun River, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 47.342583 and -105.385635, or 47º 20' 33.2988" N, 105º 23' 8.286" W. This location is 343.10 miles away from Selby, SD and Sun River, MT and it would take approximately 6 hours 7 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Circle, MT, situated 364 miles from Selby, SD and 323 miles from Sun River, MT. It would take 6 hours 10 mins to go from Selby to Circle and 4 hours 52 mins to go from Sun River to Circle.