Distance between cities › USA › Ohio › Amherst, OH › Distance from Amherst to Keystone Book Hotels

Distance from Amherst, OH to Keystone, SD

Distance

1,247 mi

Time

22 hours 12 mins

Gas Cost

$114 - $222

There are 1,087.82 miles from Amherst to Keystone in west direction and 1,247 miles (2,006.85 kilometers) by car, following the I-90 route.

Amherst and Keystone are 22 hours 12 mins far apart, if you drive non-stop .

This is the fastest route from Amherst, OH to Keystone, SD.

Please note the time difference between Amherst, OH and Keystone, SD is 2 hours. The current time in Amherst is 7:20 pm and the current time in Keystone is 5:20 pm.

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Lowest Price Rental Cars in Amherst, OH

Planning on renting a car to go from Amherst, OH to Keystone, SD? Here there are some offers to rent a car in Amherst, OH

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Amherst »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 50.08 gallons of gas to cover the route between Amherst, OH and Keystone, SD.

The estimated cost of gas to go from Amherst to Keystone is $160.46.

During the route, an average car will release 981.21 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 Amherst, OH and Keystone, SD

If you want to meet halfway between Amherst, OH and Keystone, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.955013 and -92.15407, or 43º 57' 18.0468" N, 92º 9' 14.652" W. This location is 623.52 miles away from Amherst, OH and Keystone, SD and it would take approximately 11 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Dover, MN, situated 645 miles from Amherst, OH and 604 miles from Keystone, SD. It would take 12 hours 3 mins to go from Amherst to Dover and 10 hours 13 mins to go from Keystone to Dover.

Major City Closest to Halfway Point

The major city closest to the halfway point between Amherst, OH and Keystone, SD is Rochester, MN, situated 664 miles from Amherst, OH and 594 miles from Keystone, SD. It would take 12 hours 26 mins to go from Amherst to Rochester and 10 hours 4 mins to go from Keystone to Rochester.