At Pipeston Avenue, the highway intersects the eastern terminus of SD 32.
SD 13 crosses over the Big Sioux River and then leaves the city.
229th Street, just north of the city, leads to Flandreau Indian School.
[3] At 220th Street, the highway enters the southeastern part of Brookings County.
Just south of 215th Street, the highway begins a curve to the north-northeast.
At that time, its original northern terminus was extended eastward to its current location at US 14 north of Elkton.