Race to the Dome is a canoe/kayak/SUP race on the Missouri River. Two race courses are available to paddlers - Hartsburg to Jefferson City (15.8 miles) and Providence to Jefferson City (27.6 miles). Participants supply their own boat and supplies. $65 per participant. See www.racetothedome.org for all the details. 
The race is hosted by Missouri River Relief to support their mission of connecting people to the Missouri River through education, stewardship and recreation.