Distance between cities › USA › Montana › Melstone, MT › Distance from Melstone to Keldron Book Hotels

Distance from Melstone, MT to Keldron, SD

Distance

318 mi

Time

7 hours 1 min

Gas Cost

$30 - $58

There are 293.12 miles from Melstone to Keldron in east direction and 318 miles (511.77 kilometers) by car, following the US-12 route.

Melstone and Keldron are 7 hours 1 min far apart, if you drive non-stop .

This is the fastest route from Melstone, MT to Keldron, SD.

Melstone, MT and Keldron, SD are in the same time zone (MDT). Current time in both locations is 5:01 pm.

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Lowest Price Rental Cars in Melstone, MT

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Melstone »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 12.79 gallons of gas to cover the route between Melstone, MT and Keldron, SD.

The estimated cost of gas to go from Melstone to Keldron is $41.71.

During the route, an average car will release 250.52 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 Melstone, MT and Keldron, SD

If you want to meet halfway between Melstone, MT and Keldron, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.420791 and -104.874532, or 46º 25' 14.8476" N, 104º 52' 28.3152" W. This location is 159.20 miles away from Melstone, MT and Keldron, SD and it would take approximately 3 hours 30 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Ismay, MT, situated 171 miles from Melstone, MT and 160 miles from Keldron, SD. It would take 3 hours 57 mins to go from Melstone to Ismay and 3 hours 34 mins to go from Keldron to Ismay.