The South Dakota Kayak Challenge ends Sunday in Sioux City, Iowa, a day after the kayak and canoe racers left Yankton.
This year's race was tied to Friday's dedication of the Missouri National Recreational River Water Trail at Riverside Park in Yankton.
The U.S. Interior Department added the MNRR to its list of national water trails last November. Those designated trails are routes that can be used for both recreation and travel. It's one of 14 water trails nationwide.
Lt. Gov. Matt Michels, of Yankton, and South Dakota Tourism Secretary Jim Hagen were among those who took part in the dedication.