Big Timber, MT
Sioux Falls, South Dakota
The halfway point between Sioux Falls, South Dakota and Statesville, North Carolina is O'Fallon, Illinois.
Des Monien Iowa
According to Google Maps; the distance between Seattle, Wash and Sioux Falls, SD is 1,490 miles. The hallway city, (using the suggested Google Map route), is Greycliff, Montana at 747 miles or 11 hours 38 minutes driving time.
According to Meetways.com, the halfway point between Boise, Idaho and Sioux Falls, South Dakota would be on US Highway 14 in the Bighorn National Forest near Dayton, Wyoming.
A city halfway between Billings MT & Chicago IL could be Sioux Falls SD, depending on your route.
If you're driving, the halfway point is on I-90 in South Dakota, just east of the Missouri River. The nearest town is Kimball, SD.
There are about 157.039 miles between Sioux Falls and Faulkton.
One halfway point between Fort Worth, Texas and Sioux Falls, South Dakota (depending on your route) is Emporia, Kansas.
According to Google Maps; the distance between Seattle, Wash. and Manhattan, New York is 2,851 miles. The halfway point between the two cities, using the suggested Google Maps route, is Sioux Falls, South Dakota at 1,425 miles.
347 miles
Presho, South Dakota, roughly halfway between Rapid City and Sioux Falls.