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

Distance from Custer, SD to Afton, WY

Distance

564 mi

Time

11 hours 15 mins

Gas Cost

$52 - $100

There are 375.88 miles from Custer to Afton in southwest direction and 564 miles (907.67 kilometers) by car, following the US-20 and US-26 route.

Custer and Afton are 11 hours 15 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Afton, WY. The halfway point is Elk Mountain, WY.

Custer, SD and Afton, WY are in the same time zone (MDT). Current time in both locations is 9:04 pm.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Afton, WY? 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 22.66 gallons of gas to cover the route between Custer, SD and Afton, WY.

The estimated cost of gas to go from Custer to Afton is $72.60.

During the route, an average car will release 443.94 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 Afton, WY

If you want to meet halfway between Custer, SD and Afton, WY or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.679077 and -106.357338, or 41º 40' 44.6772" N, 106º 21' 26.4168" W. This location is 282.11 miles away from Custer, SD and Afton, WY and it would take approximately 5 hours 37 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Elk Mountain, WY, situated 370 miles from Custer, SD and 333 miles from Afton, WY. It would take 5 hours 35 mins to go from Custer to Elk Mountain and 5 hours 52 mins to go from Afton to Elk Mountain.