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

Distance from Selby, SD to Helena, CA

Distance

1,678 mi

Time

1 day 5 hours

Gas Cost

$156 - $304

There are 1,204.73 miles from Selby to Helena in southwest direction and 1,678 miles (2,700.48 kilometers) by car, following the I-80 route.

Selby and Helena are 1 day 5 hours far apart, if you drive non-stop .

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

Please note the time difference between Selby, SD and Helena, CA is 2 hours. The current time in Selby is 8:44 am and the current time in Helena is 6:44 am.

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Lowest Price Rental Cars in Selby, SD

Planning on renting a car to go from Selby, SD to Helena, 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 67.38 gallons of gas to cover the route between Selby, SD and Helena, CA.

The estimated cost of gas to go from Selby to Helena is $219.81.

During the route, an average car will release 1,320.18 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 Helena, CA

If you want to meet halfway between Selby, SD and Helena, CA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.254083 and -111.00086, or 41º 15' 14.6988" N, 111º 0' 3.096" W. This location is 838.93 miles away from Selby, SD and Helena, CA and it would take approximately 14 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 Evanston, WY, situated 826 miles from Selby, SD and 853 miles from Helena, CA. It would take 14 hours 58 mins to go from Selby to Evanston and 14 hours 59 mins to go from Helena to Evanston.