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

Distance from Custer, SD to Bear River, WY

Distance

548 mi

Time

10 hours 6 mins

Gas Cost

$51 - $99

There are 411.98 miles from Custer to Bear River in southwest direction and 548 miles (881.92 kilometers) by car, following the I-80 and US-30 and WY 789 route.

Custer and Bear River are 10 hours 6 mins far apart, if you drive non-stop .

This is the fastest route from Custer, SD to Bear River, WY.

Custer, SD and Bear River, WY are in the same time zone (MDT). Current time in both locations is 1:18 am.

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Lowest Price Rental Cars in Custer, SD

Planning on renting a car to go from Custer, SD to Bear River, 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 22.03 gallons of gas to cover the route between Custer, SD and Bear River, WY.

The estimated cost of gas to go from Custer to Bear River is $71.85.

During the route, an average car will release 431.56 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 Custer, SD and Bear River, WY

If you want to meet halfway between Custer, SD and Bear River, WY or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.418535 and -107.282681, or 42º 25' 6.726" N, 107º 16' 57.6516" W. This location is 274.24 miles away from Custer, SD and Bear River, WY and it would take approximately 5 hours 3 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Muddy Gap, WY, situated 288 miles from Custer, SD and 261 miles from Bear River, WY. It would take 5 hours 36 mins to go from Custer to Muddy Gap and 4 hours 31 mins to go from Bear River to Muddy Gap.