Olallie State Park

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Renowned for its glorious waterfalls, Olallie State Park is a great place to kick off the hiking season. Moderate trails lead to the popular Twin Falls, the smaller Weeks Falls and other cascading water falls, or past the remains of a massive landslide to Cedar Butte.

Mountain bikers looking for a backcountry experience may ride the 20-mile-long Olallie Trail, which climbs more than 3,000 feet and provides stunning views of the Snoqualmie Valley. Rock climbers will find days of activities in four different cliff areas, on routes with technical ratings of 5.5 to 5.13b.

Long-distance hikers and cyclists can reach the Palouse to Cascades Trail (and an exciting new mountain bike trail) from the Cedar Falls trailhead. Anglers find rewarding fishing on the South Fork of the Snoqualmie River.

This large day-use park is within 45 minutes of Seattle and lies on the western slopes of the Cascade Mountains. The park has several trailheads and offers a quintessential Washington landscape of powerful falls, lush forest, soaring cliffs, sweeping views and a rushing river. If you're looking for a break from the city without the long drive, Olallie is your destination.

Park features
Olallie State Park is a 2,329-acre day-use park east of Seattle. The park offers 6 miles of moderate hiking trails, excellent fishing, interesting cliffs, local rock climbing opportunities and access to the long distance, mixed-use Palouse to Cascades State Park Trail.

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

Use our interactive ADA recreation map to search for other state parks with ADA amenities and facilities. 

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
  • 8.6 miles of mountain biking/mixed-use trails (The Olallie Trail)
  • 6 miles of hiking trails

Water activities & features

  • Fishing (freshwater)

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

  • Deception Crags is a popular rock climbing area located on the rocky cliffs next to the Palouse to Cascades State Park Trail (formerly known as the Iron Horse Trail). A short, ¼-mile trail along Change Creek leads from the Deception Crags Trailhead to the climbing area.
  • Olallie provides access to the Palouse to Cascades State Park Trail, a rail to trail conversion of the Chicago, Milwaukee, St. Paul and Pacific Railroad (also known as the "Milwaukee Road") that ceased operations in 1980. The Palouse to Cascades State Park Trail travels from Rattlesnake Lake in North Bend to the Idaho border. Hiking, biking, and horseback riding are popular activities on this trail.
  • 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.
  • Printable park brochure (PDF).