Distance between cities › USA › South Dakota › Harrison, SD › Distance from Harrison to Marathon Book Hotels

Distance from Harrison, SD to Marathon, IA

Distance

257 mi

Time

5 hours

Gas Cost

$24 - $47

There are 182.94 miles from Harrison to Marathon in southeast direction and 257 miles (413.60 kilometers) by car, following the I-90 route.

Harrison and Marathon are 5 hours far apart, if you drive non-stop .

This is the fastest route from Harrison, SD to Marathon, IA.

Harrison, SD and Marathon, IA are in the same time zone (CDT). Current time in both locations is 2:28 am.

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Marathon, IA? Here there are some offers to rent a car in Harrison, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Harrison »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 10.34 gallons of gas to cover the route between Harrison, SD and Marathon, IA.

The estimated cost of gas to go from Harrison to Marathon is $33.71.

During the route, an average car will release 202.48 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 Harrison, SD and Marathon, IA

If you want to meet halfway between Harrison, SD and Marathon, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.608515 and -96.503617, or 43º 36' 30.654" N, 96º 30' 13.0212" W. This location is 128.67 miles away from Harrison, SD and Marathon, IA and it would take approximately 2 hours 30 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Valley Springs, SD, situated 128 miles from Harrison, SD and 133 miles from Marathon, IA. It would take 2 hours 20 mins to go from Harrison to Valley Springs and 2 hours 49 mins to go from Marathon to Valley Springs.

Major City Closest to Halfway Point

The major city closest to the halfway point between Harrison, SD and Marathon, IA is Sioux Falls, SD, situated 117 miles from Harrison, SD and 149 miles from Marathon, IA. It would take 2 hours 12 mins to go from Harrison to Sioux Falls and 3 hours 6 mins to go from Marathon to Sioux Falls.