Distance between cities › USA › Montana › Roberts, MT › Distance from Roberts to Smithwick Book Hotels

Distance from Roberts, MT to Smithwick, SD

Distance

430 mi

Time

8 hours 13 mins

Gas Cost

$39 - $76

There are 326.54 miles from Roberts to Smithwick in southeast direction and 430 miles (692.02 kilometers) by car, following the US-212 and MT 59 route.

Roberts and Smithwick are 8 hours 13 mins far apart, if you drive non-stop .

This is the fastest route from Roberts, MT to Smithwick, SD.

Roberts, MT and Smithwick, SD are in the same time zone (MDT). Current time in both locations is 10:31 pm.

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Lowest Price Rental Cars in Roberts, MT

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Roberts »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 17.25 gallons of gas to cover the route between Roberts, MT and Smithwick, SD.

The estimated cost of gas to go from Roberts to Smithwick is $55.28.

During the route, an average car will release 338.03 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 Roberts, MT and Smithwick, SD

If you want to meet halfway between Roberts, MT and Smithwick, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.480088 and -105.599859, or 45º 28' 48.3168" N, 105º 35' 59.4924" W. This location is 214.80 miles away from Roberts, MT and Smithwick, SD and it would take approximately 4 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Olive, MT, situated 218 miles from Roberts, MT and 226 miles from Smithwick, SD. It would take 4 hours 2 mins to go from Roberts to Olive and 4 hours 31 mins to go from Smithwick to Olive.