As the largest water-park-hosted charity rubber duck race in the Sacramento area, the Duck Dash is a unique event. At 5 p.m., thousands of floating yellow ducks will bob and duck, vying for first place as they amble down a man-made river. Each duck adoption comes with entry to Raging Waters, and proceeds benefit UC Davis Children’s Hospital and the Sutter Children’s Center. So run, don’t waddle, to the Duck Dash. 1600 Exposition Boulevard, theduckdash.com.