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

Distance from Custer, SD to Agar, SD

Distance

271 mi

Time

4 hours 53 mins

Gas Cost

$24 - $47

There are 189.31 miles from Custer to Agar in northeast direction and 271 miles (436.13 kilometers) by car, following the I-90 and US-14 route.

Custer and Agar are 4 hours 53 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Agar, SD. The halfway point is Kadoka, SD.

Please note the time difference between Custer, SD and Agar, SD is 1 hour. The current time in Custer is 7:07 pm and the current time in Agar is 8:07 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Agar, SD? 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 10.90 gallons of gas to cover the route between Custer, SD and Agar, SD.

The estimated cost of gas to go from Custer to Agar is $33.75.

During the route, an average car will release 213.50 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 $3.10 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Custer, SD and Agar, SD

If you want to meet halfway between Custer, SD and Agar, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.835983 and -101.546776, or 43º 50' 9.5388" N, 101º 32' 48.3936" W. This location is 135.67 miles away from Custer, SD and Agar, SD and it would take approximately 2 hours 26 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Kadoka, SD, situated 135 miles from Custer, SD and 137 miles from Agar, SD. It would take 2 hours 7 mins to go from Custer to Kadoka and 2 hours 29 mins to go from Agar to Kadoka.