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

Distance from Roberts, MT to Millboro, SD

Distance

600 mi

Time

11 hours 11 mins

Gas Cost

$55 - $107

There are 481.82 miles from Roberts to Millboro in southeast direction and 600 miles (965.61 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Roberts and Millboro are 11 hours 11 mins far apart, if you drive non-stop .

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

Please note the time difference between Roberts, MT and Millboro, SD is 1 hour. The current time in Roberts is 12:00 am and the current time in Millboro is 1:00 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Roberts, MT to Millboro, SD:

Lowest Price Rental Cars in Roberts, MT

Planning on renting a car to go from Roberts, MT to Millboro, 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 24.11 gallons of gas to cover the route between Roberts, MT and Millboro, SD.

The estimated cost of gas to go from Roberts to Millboro is $77.24.

During the route, an average car will release 472.34 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 Millboro, SD

If you want to meet halfway between Roberts, MT and Millboro, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.842302 and -104.108211, or 44º 50' 32.2872" N, 104º 6' 29.5596" W. This location is 300.15 miles away from Roberts, MT and Millboro, SD and it would take approximately 5 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Aladdin, WY, situated 327 miles from Roberts, MT and 306 miles from Millboro, SD. It would take 6 hours 8 mins to go from Roberts to Aladdin and 5 hours 41 mins to go from Millboro to Aladdin.