Distance between cities › USA › Montana › Grass Range, MT › Distance from Grass Range to Lennox Book Hotels

Distance from Grass Range, MT to Lennox, SD

Distance

756 mi

Time

13 hours 30 mins

Gas Cost

$70 - $137

There are 632.30 miles from Grass Range to Lennox in southeast direction and 756 miles (1,216.66 kilometers) by car, following the I-90 and US-14 and US-16 Truck and SD 79 route.

Grass Range and Lennox are 13 hours 30 mins far apart, if you drive non-stop .

This is the fastest route from Grass Range, MT to Lennox, SD.

Please note the time difference between Grass Range, MT and Lennox, SD is 1 hour. The current time in Grass Range is 3:12 am and the current time in Lennox is 4:12 am.

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Lowest Price Rental Cars in Grass Range, MT

Planning on renting a car to go from Grass Range, MT to Lennox, SD? Here there are some offers to rent a car in Grass Range, MT

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Grass Range »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 30.36 gallons of gas to cover the route between Grass Range, MT and Lennox, SD.

The estimated cost of gas to go from Grass Range to Lennox is $99.04.

During the route, an average car will release 594.82 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 Grass Range, MT and Lennox, SD

If you want to meet halfway between Grass Range, MT and Lennox, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.296399 and -103.432662, or 44º 17' 47.0364" N, 103º 25' 57.5832" W. This location is 377.99 miles away from Grass Range, MT and Lennox, SD and it would take approximately 6 hours 45 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Piedmont, SD, situated 394 miles from Grass Range, MT and 363 miles from Lennox, SD. It would take 7 hours 31 mins to go from Grass Range to Piedmont and 6 hours 1 min to go from Lennox to Piedmont.