Distance between cities › USA › South Carolina › Ehrhardt, SC › Distance from Ehrhardt to Big Arm Book Hotels

Distance from Ehrhardt, SC to Big Arm, MT

Distance

2,461 mi

Time

1 day 20 hours

Gas Cost

$229 - $446

There are 2,000.87 miles from Ehrhardt to Big Arm in northwest direction and 2,461 miles (3,960.60 kilometers) by car, following the I-90 route.

Ehrhardt and Big Arm are 1 day 20 hours far apart, if you drive non-stop .

This is the fastest route from Ehrhardt, SC to Big Arm, MT. The halfway point is Burbank, SD.

Please note the time difference between Ehrhardt, SC and Big Arm, MT is 2 hours. The current time in Ehrhardt is 7:38 am and the current time in Big Arm is 5:38 am.

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Lowest Price Rental Cars in Ehrhardt, SC

Planning on renting a car to go from Ehrhardt, SC to Big Arm, MT? Here there are some offers to rent a car in Ehrhardt, SC

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Ehrhardt »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 98.83 gallons of gas to cover the route between Ehrhardt, SC and Big Arm, MT.

The estimated cost of gas to go from Ehrhardt to Big Arm is $322.38.

During the route, an average car will release 1,936.23 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 Ehrhardt, SC and Big Arm, MT

If you want to meet halfway between Ehrhardt, SC and Big Arm, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.867207 and -96.792992, or 42º 52' 1.9452" N, 96º 47' 34.7712" W. This location is 1,230.40 miles away from Ehrhardt, SC and Big Arm, MT and it would take approximately 22 hours 8 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Burbank, SD, situated 1,325 miles from Ehrhardt, SC and 1,196 miles from Big Arm, MT. It would take 20 hours 29 mins to go from Ehrhardt to Burbank and 16 hours 52 mins to go from Big Arm to Burbank.