ParkPioneer ParkIsland Crest Way & SE 68th St, Mercer Island, WA 98040 · Mercer IslandWebsiteMap →Pioneer Park is a 113-acre forested park on Mercer Island with 6.6 miles of trails, diverse habitats, and amenities including benches, picnic tables, and public art. It hosts community events and outdoor recreation.Upcoming eventsPlant ID WalkThursday, October 15, 2026 · 1:00 PM PDT · Recreational / Outdoor ActivityBrowse all venues
