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

Distance from Selby, SD to Irwin, ID

Distance

815 mi

Time

15 hours 57 mins

Gas Cost

$76 - $148

There are 573.71 miles from Selby to Irwin in southwest direction and 815 miles (1,311.62 kilometers) by car, following the US-12 and ND 22 route.

Selby and Irwin are 15 hours 57 mins far apart, if you drive non-stop .

This is the fastest route from Selby, SD to Irwin, ID.

Please note the time difference between Selby, SD and Irwin, ID is 1 hour. The current time in Selby is 5:54 pm and the current time in Irwin is 4:54 pm.

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Lowest Price Rental Cars in Selby, SD

Planning on renting a car to go from Selby, SD to Irwin, ID? 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 32.71 gallons of gas to cover the route between Selby, SD and Irwin, ID.

The estimated cost of gas to go from Selby to Irwin is $106.71.

During the route, an average car will release 640.89 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 Irwin, ID

If you want to meet halfway between Selby, SD and Irwin, ID or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.166192 and -107.304006, or 46º 9' 58.2912" N, 107º 18' 14.4216" W. This location is 407.26 miles away from Selby, SD and Irwin, ID and it would take approximately 7 hours 58 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Hysham, MT, situated 382 miles from Selby, SD and 439 miles from Irwin, ID. It would take 7 hours 50 mins to go from Selby to Hysham and 8 hours 19 mins to go from Irwin to Hysham.