Distance between cities › USA › South Dakota › Iona, SD › Distance from Iona to Boulder Book Hotels

Distance from Iona, SD to Boulder, UT

Distance

970 mi

Time

18 hours 38 mins

Gas Cost

$90 - $176

There are 740.40 miles from Iona to Boulder in southwest direction and 970 miles (1,561.06 kilometers) by car, following the I-70 route.

Iona and Boulder are 18 hours 38 mins far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Boulder, UT.

Please note the time difference between Iona, SD and Boulder, UT is 1 hour. The current time in Iona is 7:33 am and the current time in Boulder is 6:33 am.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Boulder, UT? Here there are some offers to rent a car in Iona, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Iona »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 38.95 gallons of gas to cover the route between Iona, SD and Boulder, UT.

The estimated cost of gas to go from Iona to Boulder is $127.04.

During the route, an average car will release 763.02 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 Iona, SD and Boulder, UT

If you want to meet halfway between Iona, SD and Boulder, UT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.80912 and -105.005706, or 39º 48' 32.832" N, 105º 0' 20.5416" W. This location is 484.87 miles away from Iona, SD and Boulder, UT and it would take approximately 9 hours 19 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest city to the halfway point is Westminster, CO, situated 489 miles from Iona, SD and 484 miles from Boulder, UT. It would take 9 hours 35 mins to go from Iona to Westminster and 9 hours 12 mins to go from Boulder to Westminster.

Major City Closest to Halfway Point

The major city closest to the halfway point between Iona, SD and Boulder, UT is Denver, CO, situated 492 miles from Iona, SD and 482 miles from Boulder, UT. It would take 9 hours 41 mins to go from Iona to Denver and 9 hours 11 mins to go from Boulder to Denver.