Distance between cities › USA › South Dakota › Custer, SD › Distance from Custer to Armstrong Book Hotels

Distance from Custer, SD to Armstrong, PA

Distance

1,429 mi

Time

1 day 1 hour

Gas Cost

$131 - $254

There are 1,244.09 miles from Custer to Armstrong in east direction and 1,429 miles (2,299.75 kilometers) by car, following the I-90 and US-14 route.

Custer and Armstrong are 1 day 1 hour far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Armstrong, PA. The halfway point is Rockland, WI.

Please note the time difference between Custer, SD and Armstrong, PA is 2 hours. The current time in Custer is 11:54 pm (Mar 11) and the current time in Armstrong is 1:54 am (Mar 12).

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Armstrong, PA? Here there are some offers to rent a car in Custer, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Custer »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 57.39 gallons of gas to cover the route between Custer, SD and Armstrong, PA.

The estimated cost of gas to go from Custer to Armstrong is $183.89.

During the route, an average car will release 1,124.47 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Armstrong, PA

If you want to meet halfway between Custer, SD and Armstrong, PA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.917187 and -90.891434, or 43º 55' 1.8732" N, 90º 53' 29.1624" W. This location is 714.56 miles away from Custer, SD and Armstrong, PA and it would take approximately 12 hours 57 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Rockland, WI, situated 691 miles from Custer, SD and 757 miles from Armstrong, PA. It would take 9 hours 45 mins to go from Custer to Rockland and 11 hours 44 mins to go from Armstrong to Rockland.