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

Distance from Harrison, SD to Mount Union, IA

Distance

508 mi

Time

9 hours 53 mins

Gas Cost

$47 - $92

There are 399.97 miles from Harrison to Mount Union in southeast direction and 508 miles (817.55 kilometers) by car, following the I-29 route.

Harrison and Mount Union are 9 hours 53 mins far apart, if you drive non-stop .

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

Harrison, SD and Mount Union, IA are in the same time zone (CDT). Current time in both locations is 2:36 am.

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Lowest Price Rental Cars in Harrison, SD

Planning on renting a car to go from Harrison, SD to Mount Union, 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 20.39 gallons of gas to cover the route between Harrison, SD and Mount Union, IA.

The estimated cost of gas to go from Harrison to Mount Union is $66.50.

During the route, an average car will release 399.40 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 Mount Union, IA

If you want to meet halfway between Harrison, SD and Mount Union, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.497666 and -95.411992, or 41º 29' 51.5976" N, 95º 24' 43.1712" W. This location is 253.80 miles away from Harrison, SD and Mount Union, IA and it would take approximately 4 hours 56 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Shelby, IA, situated 261 miles from Harrison, SD and 249 miles from Mount Union, IA. It would take 5 hours 11 mins to go from Harrison to Shelby and 4 hours 49 mins to go from Mount Union to Shelby.