Distance between cities › USA › Maryland › Benson, MD › Distance from Benson to Keystone Book Hotels

Distance from Benson, MD to Keystone, SD

Distance

1,649 mi

Time

1 day 5 hours

Gas Cost

$154 - $299

There are 1,420.31 miles from Benson to Keystone in northwest direction and 1,649 miles (2,653.81 kilometers) by car, following the I-90 route.

Benson and Keystone are 1 day 5 hours far apart, if you drive non-stop .

This is the fastest route from Benson, MD to Keystone, SD.

Please note the time difference between Benson, MD and Keystone, SD is 2 hours. The current time in Benson is 9:11 am and the current time in Keystone is 7:11 am.

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Lowest Price Rental Cars in Benson, MD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Benson »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 66.23 gallons of gas to cover the route between Benson, MD and Keystone, SD.

The estimated cost of gas to go from Benson to Keystone is $216.05.

During the route, an average car will release 1,297.64 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 Benson, MD and Keystone, SD

If you want to meet halfway between Benson, MD 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 43.010554 and -89.22705, or 43º 0' 37.9944" N, 89º 13' 37.38" W. This location is 824.60 miles away from Benson, MD and Keystone, SD and it would take approximately 14 hours 50 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is McFarland, WI, situated 859 miles from Benson, MD and 797 miles from Keystone, SD. It would take 16 hours 12 mins to go from Benson to McFarland and 13 hours 42 mins to go from Keystone to McFarland.

Major City Closest to Halfway Point

The major city closest to the halfway point between Benson, MD and Keystone, SD is Madison, WI, situated 865 miles from Benson, MD and 792 miles from Keystone, SD. It would take 16 hours 22 mins to go from Benson to Madison and 13 hours 46 mins to go from Keystone to Madison.