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

Distance from Roberts, MT to Roundup, MT

Distance

99 mi

Time

1 hour 59 mins

Gas Cost

$9 - $18

There are 80.81 miles from Roberts to Roundup in northeast direction and 99 miles (159.33 kilometers) by car, following the US-87 route.

Roberts and Roundup are 1 hour 59 mins far apart, if you drive non-stop .

This is the fastest route from Roberts, MT to Roundup, MT. The halfway point is Billings, MT.

Roberts, MT and Roundup, MT are in the same time zone (MDT). Current time in both locations is 7:25 pm.

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Lowest Price Rental Cars in Roberts, MT

Planning on renting a car to go from Roberts, MT to Roundup, MT? 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 3.99 gallons of gas to cover the route between Roberts, MT and Roundup, MT.

The estimated cost of gas to go from Roberts to Roundup is $12.70.

During the route, an average car will release 78.10 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 $3.19 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Roberts, MT and Roundup, MT

If you want to meet halfway between Roberts, MT and Roundup, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.760925 and -108.539398, or 45º 45' 39.33" N, 108º 32' 21.8328" W. This location is 49.63 miles away from Roberts, MT and Roundup, MT and it would take approximately 59 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest and also the major city is Billings, MT, situated 46.66 miles from Roberts, MT and 49.49 miles from Roundup, MT. It would take 59 minutes to go from Roberts to Billings and 1 hour 14 mins to go from Roundup to Billings.