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

Distance from Iona, SD to Williston, TN

Distance

982 mi

Time

19 hours 41 mins

Gas Cost

$92 - $178

There are 790.96 miles from Iona to Williston in southeast direction and 982 miles (1,580.38 kilometers) by car, following the I-29 and I-80 Local and US-6 route.

Iona and Williston are 19 hours 41 mins far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Williston, TN.

Iona, SD and Williston, TN are in the same time zone (CDT). Current time in both locations is 9:01 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Iona, SD to Williston, TN:

Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Williston, TN? 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 39.45 gallons of gas to cover the route between Iona, SD and Williston, TN.

The estimated cost of gas to go from Iona to Williston is $128.70.

During the route, an average car will release 772.98 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 Williston, TN

If you want to meet halfway between Iona, SD and Williston, TN or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.06538 and -94.560709, or 39º 3' 55.368" N, 94º 33' 38.5524" W. This location is 491.20 miles away from Iona, SD and Williston, TN and it would take approximately 9 hours 50 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest and also the major city is Kansas City, MO, situated 481.61 miles from Iona, SD and 500.8 miles from Williston, TN. It would take 9 hours 35 mins to go from Iona to Kansas City and 10 hours 7 mins to go from Williston to Kansas City.