The King County Parks Foundation is focused on three efforts. The first is a partnership to combat climate change through the planting of 1 Million trees in King County by 2020. The second effort is to support the re-development of the iconic Wilburton Trestle along the Eastside Rail Corridor. Once complete this 16.7 mile recreation and transportation corridor will connect the communities of Renton, Bellevue, Kirkland, Woodinville and Redmond. Lastly, the Foundation is focused on efforts to support conservation of the last best places in King County through the King County Land Conservation Initiative.

The King County Parks Foundation is devoted to cultivating private-sector philanthropy to connect communities to regional trails, open space and parks to support the resiliency of the parks system for future generations. The King County Parks Foundation is a component fund of the Seattle Foundation.