Distance between cities › USA › South Dakota › Sioux Falls, SD › Distance from Sioux Falls to Harmon Book Hotels

Distance from Sioux Falls, SD to Harmon, IL

Distance

513 mi

Time

9 hours 17 mins

Gas Cost

$48 - $93

There are 385.73 miles from Sioux Falls to Harmon in southeast direction and 513 miles (825.59 kilometers) by car, following the I-80 route.

Sioux Falls and Harmon are 9 hours 17 mins far apart, if you drive non-stop .

This is the fastest route from Sioux Falls, SD to Harmon, IL. The halfway point is Waukee, IA.

Sioux Falls, SD and Harmon, IL are in the same time zone (CDT). Current time in both locations is 12:22 am.

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Lowest Price Rental Cars in Sioux Falls, SD

Planning on renting a car to go from Sioux Falls, SD to Harmon, IL? Here there are some offers to rent a car in Sioux Falls, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Sioux Falls »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 20.60 gallons of gas to cover the route between Sioux Falls, SD and Harmon, IL.

The estimated cost of gas to go from Sioux Falls to Harmon is $67.20.

During the route, an average car will release 403.60 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 Sioux Falls, SD and Harmon, IL

If you want to meet halfway between Sioux Falls, SD and Harmon, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.577110 and -93.870514, or 41º 34' 37.596" N, 93º 52' 13.8504" W. This location is 256.48 miles away from Sioux Falls, SD and Harmon, IL and it would take approximately 4 hours 38 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Waukee, IA, situated 272 miles from Sioux Falls, SD and 242 miles from Harmon, IL. It would take 3 hours 55 mins to go from Sioux Falls to Waukee and 3 hours 43 mins to go from Harmon to Waukee.

Major City Closest to Halfway Point

The major city closest to the halfway point between Sioux Falls, SD and Harmon, IL is Des Moines, IA, situated 283 miles from Sioux Falls, SD and 229 miles from Harmon, IL. It would take 4 hours 6 mins to go from Sioux Falls to and 3 hours 30 mins to go from Harmon to Des Moines.