Distance between cities › USA › South Dakota › Wewela, SD › Distance from Wewela to Roy Book Hotels

Distance from Wewela, SD to Roy, MT

Distance

680 mi

Time

12 hours 56 mins

Gas Cost

$63 - $123

There are 537.09 miles from Wewela to Roy in northwest direction and 680 miles (1,094.35 kilometers) by car, following the I-90 route.

Wewela and Roy are 12 hours 56 mins far apart, if you drive non-stop .

This is the fastest route from Wewela, SD to Roy, MT.

Please note the time difference between Wewela, SD and Roy, MT is 1 hour. The current time in Wewela is 9:50 am and the current time in Roy is 8:50 am.

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Lowest Price Rental Cars in Wewela, SD

Planning on renting a car to go from Wewela, SD to Roy, MT? Here there are some offers to rent a car in Wewela, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Wewela »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 27.30 gallons of gas to cover the route between Wewela, SD and Roy, MT.

The estimated cost of gas to go from Wewela to Roy is $89.04.

During the route, an average car will release 534.80 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 Wewela, SD and Roy, MT

If you want to meet halfway between Wewela, SD and Roy, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.074731 and -104.505212, or 45º 4' 29.0316" N, 104º 30' 18.7632" W. This location is 339.84 miles away from Wewela, SD and Roy, MT and it would take approximately 6 hours 28 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Alzada, MT, situated 335 miles from Wewela, SD and 345 miles from Roy, MT. It would take 6 hours 11 mins to go from Wewela to Alzada and 6 hours 46 mins to go from Roy to Alzada.