Olallie State Park

Olallie State Park is known for the scenic beauty of its two waterfalls. Located on the western slopes of the Cascade Mountains, this day-use park features 6 miles of hiking trail for visitors to explore the 2,500-acres of cliff formations and old-growth forest, teeming with huckleberries. An 80-foot bridge connects the park’s two main attractions: the Weeks Falls, at 77-feet high, and the spectacular Twin Falls, at 135-feet high. The winter is the best time of year to view the grandeur of these mighty cascading waterfalls.
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Automated pay station: This park is equipped with an automated pay station for visitors to purchase a one-day or annual Discover Pass.
  1. Activities
  2. History
  3. Maps
  4. Trailheads
ADA Amenities/Facilities
  • Restroom
  • Hiking trail
Picnic & Day-Use Facilities
The park offers a total of 11 picnic tables in two picnic areas at the South Fork Picnic Area. All are available first come, first served.

  • 0.1 miles of ADA hiking trails
  • 6 miles of hiking trails
Water Activities & Features
  • Freshwater fishing
Other Activities & Features
  • Bird watching
  • Mountain biking
  • Rock climbing
  • Wildlife viewing
Interpretive Opportunities
An interpretive trail at the South Fork Picnic Area passes through a small grove of old-growth trees. Interpretive signage provides visitors with information about the Snoqualmie Wagon Road, the first road to run from Ellensburg to Seattle in the 1800s.
Additional Information
  • The rock-climbing area is adjacent to the park, above the Iron Horse Trail. Rock-climbing equipment is necessary. Fatal accidents have occurred when amateurs have climbed without proper equipment.
  • Olallie provides access to the Iron Horse Trail, an old Milwaukee Railroad path that starts in North Bend and extends to the Idaho border. The Iron Horse Trail permits mountain biking and horseback riding.
  • The river is seasonally open for fishing.
  • A recreational license is required for fishing and shellfish harvesting at Washington state parks. For regulations, fishing season information, or to purchase a recreational license, visit the Washington Department of Fish and Wildlife.
  • Kayaking only is allowed downstream of Twin Falls.