Distance between cities › USA › Minnesota › Welch, MN › Distance from Welch to Interior Book Hotels

Distance from Welch, MN to Interior, SD

Distance

520 mi

Time

9 hours 27 mins

Gas Cost

$48 - $94

There are 461.79 miles from Welch to Interior in west direction and 520 miles (836.86 kilometers) by car, following the I-90 route.

Welch and Interior are 9 hours 27 mins far apart, if you drive non-stop .

This is the fastest route from Welch, MN to Interior, SD.

Please note the time difference between Welch, MN and Interior, SD is 1 hour. The current time in Welch is 3:02 pm and the current time in Interior is 2:02 pm.

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Lowest Price Rental Cars in Welch, MN

Planning on renting a car to go from Welch, MN to Interior, SD? Here there are some offers to rent a car in Welch, MN

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Welch »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 20.87 gallons of gas to cover the route between Welch, MN and Interior, SD.

The estimated cost of gas to go from Welch to Interior is $68.06.

During the route, an average car will release 408.81 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 Welch, MN and Interior, SD

If you want to meet halfway between Welch, MN and Interior, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.666702 and -97.156144, or 43º 40' 0.1272" N, 97º 9' 22.1184" W. This location is 259.78 miles away from Welch, MN and Interior, SD and it would take approximately 4 hours 43 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Montrose, SD, situated 267 miles from Welch, MN and 256 miles from Interior, SD. It would take 5 hours 24 mins to go from Welch to Montrose and 4 hours 16 mins to go from Interior to Montrose.

Major City Closest to Halfway Point

The major city closest to the halfway point between Welch, MN and Interior, SD is Sioux Falls, SD, situated 246 miles from Welch, MN and 282 miles from Interior, SD. It would take 5 hours 3 mins to go from Welch to Sioux Falls and 4 hours 42 mins to go from Interior to Sioux Falls.