Distance between cities › USA › Illinois › Mason, IL › Distance from Mason to Agar Book Hotels

Distance from Mason, IL to Agar, SD

Distance

986 mi

Time

17 hours 23 mins

Gas Cost

$92 - $179

There are 714.59 miles from Mason to Agar in northwest direction and 986 miles (1,586.81 kilometers) by car, following the I-90 route.

Mason and Agar are 17 hours 23 mins far apart, if you drive non-stop .

This is the fastest route from Mason, IL to Agar, SD.

Mason, IL and Agar, SD are in the same time zone (CDT). Current time in both locations is 10:53 pm.

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Lowest Price Rental Cars in Mason, IL

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Mason »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 39.59 gallons of gas to cover the route between Mason, IL and Agar, SD.

The estimated cost of gas to go from Mason to Agar is $129.14.

During the route, an average car will release 775.63 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 Mason, IL and Agar, SD

If you want to meet halfway between Mason, IL and Agar, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.496674 and -94.544769, or 41º 29' 48.0264" N, 94º 32' 41.1684" W. This location is 492.88 miles away from Mason, IL and Agar, SD and it would take approximately 8 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 Casey, IA, situated 492 miles from Mason, IL and 495 miles from Agar, SD. It would take 8 hours 58 mins to go from Mason to Casey and 8 hours 28 mins to go from Agar to Casey.