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

Distance from Selby, SD to Helm, CA

Distance

1,702 mi

Time

1 day 6 hours

Gas Cost

$159 - $308

There are 1,211.02 miles from Selby to Helm in southwest direction and 1,702 miles (2,739.10 kilometers) by car, following the I-15 route.

Selby and Helm are 1 day 6 hours far apart, if you drive non-stop .

This is the fastest route from Selby, SD to Helm, CA.

Please note the time difference between Selby, SD and Helm, CA is 2 hours. The current time in Selby is 8:32 am and the current time in Helm is 6:32 am.

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Lowest Price Rental Cars in Selby, SD

Planning on renting a car to go from Selby, SD to Helm, CA? 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 68.33 gallons of gas to cover the route between Selby, SD and Helm, CA.

The estimated cost of gas to go from Selby to Helm is $222.90.

During the route, an average car will release 1,338.79 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 Helm, CA

If you want to meet halfway between Selby, SD and Helm, CA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.299145 and -110.663524, or 41º 17' 56.922" N, 110º 39' 48.6864" W. This location is 850.75 miles away from Selby, SD and Helm, CA and it would take approximately 15 hours 22 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Piedmont, WY, situated 815 miles from Selby, SD and 902 miles from Helm, CA. It would take 14 hours 56 mins to go from Selby to Piedmont and 16 hours 25 mins to go from Helm to Piedmont.