King County, Washington
5,027 hiking trails · 24parks & campgrounds · 42 cities. Real OpenStreetMap + Recreation.gov data.
About Hiking in King County, Washington
King County is home to 5,027 mapped hiking trails and 24 federal parks, campgrounds, and recreation areas spread across 42 cities. Trail data is sourced from OpenStreetMap contributors; park and campground info comes from Recreation.gov.
Looking for something specific? Search all trails in King County or browse parks. Want to narrow further? Pick a city below to see only that city’s outdoor options.
Trails & Parks in King County
Up to 224 pinpoints showing trail and park locations across the county.
Cities in King County
Click any city to see trails and parks within it.
18 more cities in this county.
Sample Parks in King County
Sample Trails in King County
Hiking guides for Washington
Statewide rankings and guides — useful context for King County.
Photo: Sergei AkulichThe 10 Longest Hiking Trails in Washington, Ranked
Washington's longest mapped hiking trails, ranked by distance with notes on what makes each route worth the commitment.
Photo: Holly MandarichWashington's 10 Most Punishing Trails by Elevation Gain
Steep is hard. These are the ten Washington trails with the most total elevation gain — quad-burners earned by hard climbing.
Photo: Maddi BazzoccoThe Best Beginner-Friendly Hikes in Washington
Ten gentle, well-marked Washington trails perfect for first-time hikers, families, or recovery days.
Photo: Tobias MrzykThe 10 Most Challenging Hikes in Washington
Washington's ten hardest hikes — expert difficulty, big mileage, or serious exposure. Reserved for experienced hikers.
Photo: Diego LozanoThe Best National Parks & Recreation Areas in Washington
Federal parks and recreation areas in Washington ranked by what they actually offer hikers and campers, not just popularity.
Photo: Tobias MrzykBest Waterfall Hikes in Washington: 10 Trails to See Falls Up Close
Washington's best hikes to named waterfalls — from short family-friendly viewpoints to all-day cascade chasing.