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

Distance from Saint Johns, OH to Keystone, SD

Distance

1,167 mi

Time

21 hours 22 mins

Gas Cost

$107 - $208

There are 1,013.22 miles from Saint Johns to Keystone in northwest direction and 1,167 miles (1,878.10 kilometers) by car, following the I-90 route.

Saint Johns and Keystone are 21 hours 22 mins far apart, if you drive non-stop .

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

Please note the time difference between Saint Johns, OH and Keystone, SD is 2 hours. The current time in Saint Johns is 9:29 pm and the current time in Keystone is 7:29 pm.

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Lowest Price Rental Cars in Saint Johns, OH

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Saint Johns »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 46.88 gallons of gas to cover the route between Saint Johns, OH and Keystone, SD.

The estimated cost of gas to go from Saint Johns to Keystone is $150.21.

During the route, an average car will release 918.54 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 Saint Johns, OH and Keystone, SD

If you want to meet halfway between Saint Johns, 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 43.671592 and -92.883137, or 43º 40' 17.7312" N, 92º 52' 59.2932" W. This location is 583.70 miles away from Saint Johns, OH and Keystone, SD and it would take approximately 10 hours 41 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Austin, MN, situated 615 miles from Saint Johns, OH and 553 miles from Keystone, SD. It would take 12 hours 8 mins to go from Saint Johns to Austin and 9 hours 19 mins to go from Keystone to Austin.