Distance between cities › USA › Illinois › Gridley, IL › Distance from Gridley to Keystone Book Hotels

Distance from Gridley, IL to Keystone, SD

Distance

947 mi

Time

16 hours 26 mins

Gas Cost

$89 - $173

There are 772.73 miles from Gridley to Keystone in northwest direction and 947 miles (1,524.05 kilometers) by car, following the I-90 route.

Gridley and Keystone are 16 hours 26 mins far apart, if you drive non-stop .

This is the fastest route from Gridley, IL to Keystone, SD.

Please note the time difference between Gridley, IL and Keystone, SD is 1 hour. The current time in Gridley is 2:33 am and the current time in Keystone is 1:33 am.

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Lowest Price Rental Cars in Gridley, IL

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Gridley »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 38.04 gallons of gas to cover the route between Gridley, IL and Keystone, SD.

The estimated cost of gas to go from Gridley to Keystone is $125.18.

During the route, an average car will release 745.23 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 $3.29 per gallon of regular gas. Price last updated on March 13, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Gridley, IL and Keystone, SD

If you want to meet halfway between Gridley, IL 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 42.213458 and -96.240993, or 42º 12' 48.4488" N, 96º 14' 27.5748" W. This location is 473.57 miles away from Gridley, IL and Keystone, SD and it would take approximately 8 hours 13 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sloan, IA, situated 480 miles from Gridley, IL and 469 miles from Keystone, SD. It would take 8 hours 50 mins to go from Gridley to Sloan and 7 hours 42 mins to go from Keystone to Sloan.