National Public Lands Day 2026 – Mt Si Trailhead

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Date & Time
Saturday, September 26, 2026 | 9 am-12 pm
Location
Mount Si Trailhead
Event Overview
Join us in caring for our public lands! This project will focus on removing non-native blackberry encroaching on the short ADA loop trail at the Mt Si trailhead. This blackberry can crowd out native vegetation, limit habitat for wildlife, and make recreation areas harder to access. By removing encroaching blackberry and other brush, volunteers help restore healthier landscapes while keeping trails, trailheads, and picnic areas open and welcoming for everyone to enjoy.

What to Expect:

We will have fun and work at our own pace during this 3-hour work party. Light-duty tasks will be available, and no prior experience necessary. This project is on flat terrain and requires minimal hiking, as most projects are within a quarter mile of the trailhead. Projects will involve using loppers and hand pruners to cut back blackberry canes and shovels to dig out blackberry roots.

8:45 to 9:00 AM: Check-in at the Mt Si trailhead.

9:00 AM: Welcome, safety talks, project overview, and begin work!

12 PM: We will wrap up work in time to travel to Tanner Landing for lunch and celebration with volunteers from all six work sites. Please join us!
Difficulty
Moderate to Strenuous
Age Restriction
Ages 14 and up.
What to Bring

For safety, volunteers are required to wear:

  • Long pants (we’ll be working with tools, so no shorts!)
  • Sturdy, close-toed shoes (absolutely no sandals)
  • Gloves (provided by the Greenway Trust)

In addition, we recommend that participants bring:

  • Warm layers
  • Sunscreen
  • Rain gear
  • Snacks
  • Water for the day (3 liters minimum)
  • Small daypack for lunch, extra layers, etc.
Driving Directions

From Seattle, take I-90 Eastbound. In 29 miles, take exit 32 for 436th Ave SE. Turn left onto 436th Ave SE. At the second traffic circle, turn left onto SE N Bend Way. Turn right onto SE Mount Si Rd. In about two miles, the entrance to the Mount Si Trailhead will be on the left. Look for Greenway event signs and staff.

Discover Pass required for parking at Mount Si Trailhead

Google Map

Additional Information

Mount Si Trailhead is the starting point for one of Washington State’s most popular and challenging hikes. Located near North Bend, Washington, the trailhead provides access to the Mount Si Trail, a steep, well-maintained path that ascends about 3,150 feet over roughly 4 miles (8 miles round trip). A short ADA loop trail is also found at the trailhead.

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