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

Distance from Roberts, MT to Ardmore, SD

Distance

440 mi

Time

8 hours 39 mins

Gas Cost

$40 - $78

There are 317.25 miles from Roberts to Ardmore in southeast direction and 440 miles (708.11 kilometers) by car, following the I-90 and US-14 and US-87 route.

Roberts and Ardmore are 8 hours 39 mins far apart, if you drive non-stop .

This is the fastest route from Roberts, MT to Ardmore, SD. The halfway point is Buffalo, WY.

Roberts, MT and Ardmore, SD are in the same time zone (MDT). Current time in both locations is 9:01 pm.

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Lowest Price Rental Cars in Roberts, MT

Planning on renting a car to go from Roberts, MT to Ardmore, 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 17.65 gallons of gas to cover the route between Roberts, MT and Ardmore, SD.

The estimated cost of gas to go from Roberts to Ardmore is $56.56.

During the route, an average car will release 345.88 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 Ardmore, SD

If you want to meet halfway between Roberts, MT and Ardmore, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.209259 and -106.319038, or 44º 12' 33.3324" N, 106º 19' 8.5368" W. This location is 219.79 miles away from Roberts, MT and Ardmore, SD and it would take approximately 4 hours 19 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Buffalo, WY, situated 211 miles from Roberts, MT and 259 miles from Ardmore, SD. It would take 3 hours 41 mins to go from Roberts to Buffalo and 4 hours 40 mins to go from Ardmore to Buffalo.