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Exploring one of the Seattle Area’s Best-Kept Secrets: The Redmond Watershed Preserve

Last updated Jan 7, 2020 | Published on May 19, 2018

5.5 Miles
400 feet elevation gain

A map of the Redmond Watershed Preserve

The Redmond Watershed Preserve is one of King County’s biggest secrets. With over seven miles of trails winding through moss-covered trees, the Preserve is a hidden gem that is only minutes away from downtown Redmond. I’ve been a regular at the Preserve for years and make a habit of rambling the trail before or after work.

This sign should probably have a picture of wild owls on it

Earlier this week I arrived at the trail bright and early, this time with my camera in tow. The parking lot was empty at that early hour, although the restrooms were already unlocked. I set out on the Connector Trail next to the restrooms, but took an immediate right and walked around the parking lot to the beginning of the Trillium Connector Trail. I immediately felt the hush of the woods enfold me as I began my walk. There’s a magical quality about this place that keeps me coming back.

Intersecting the Power Line Trail

The trail soon intersects the Powerline Regional Trail, so-called because of its location beneath a set of towering electrical cables. The woods have been cleared here, providing views all the way to the Olympic Mountains to the west. After snapping a few photos, I plunged back into the woods along the Trillium Trail, heading north.

Into the Woods

This trail has steps so you can easily mount your horse.  Neat!

Here the trail winds through the woods, following a broad path that is wide enough for a small car. Horses are allowed on this part of the trail as evidenced by the droppings on the path, although I did not run into any horses today. The trail has a gentle grade and is a favorite for trail runners. I could tell that a race was recently held here from the arrows left behind on the ground to mark the way.

One of several benches along the trail

Markers left over from a previous race

After 1.8 miles, I briefly turned off of the Trillium Trail towards the Old Pond Trail. I don’t typically head over to this part of the Preserve, but I thought it would be fun to check out the pond. A bench sits at the edge of the pond and is a nice place to eat a snack and contemplate life. I didn’t linger, however, as the bugs were particularly bad today. I’ve been coming to the Preserve for years and the bugs were worse today than I have ever seen them. They’re not as bad if you keep moving, however, so I headed back to the Trillium Trail and kept going.

Approaching Old Pond

Old Pond

Here the Trillium Trail heads east and loops past the north trail entrance. There’s a second smaller parking lot here. I’ve run into deer a few times by the north parking lot, but didn’t see any today.

I took this photo of a deer several weeks ago

At this point, the main trail naturally curves southward and turns into the Pipeline Regional Trail. This trail is open to bikes and it’s best to be on the lookout for the occasional cyclist flying by. You can follow this trail back to the south parking lot, but I prefer to extend my hike by heading east on the Collin Creek Trail.

Siler’s Mill Trail

After about .3 miles, the trail branches again and I took the right fork onto Siler’s Mill Trail. This is the only trail in the Preserve that is closed to both horses and bikes. I was also attacked here a couple of years ago by an owl when I accidentally came too close to its nest. I saw the owl in a tree and whipped out my phone to take some pictures, only to have it swoop down and grab at my head with its talons as I walked away. It scared the crap out of me and I had to fend it off with my hiking poles as it kept swooping at me. So, lesson learned – leave the wildlife alone!

Beware of the owl.  This owl means business.

I followed Siler’s Mill Trail for about a mile as it wound through the trees and exited through a turnstile onto the Pipeline Regional Trail. Here, a wide corridor has been cleared through the woods to make way for an underground natural gas pipeline. I followed the Pipeline Trail until it connected back to the Powerline Trail and made my way back to the South Parking Lot from there.

Views of the Olympic Mountains in the distance

Back at the trailhead, I changed into my work clothes in the ladies room. The Preserve also has a foot washing station which I tend to use in the winter months when the trail is muddy, but not today. I was reminded of another visit when I walked the Preserve after work and returned to the parking lot after dark. I had my headlamp with me and had no issues finding the trail, but a security guard was waiting for me in the parking lot. He was supposed to lock the gate at dusk and was worried that I had gotten lost in the woods. It was pretty embarrassing. As a result, I now tend to avoid the trail in the evenings – although this is less of a concern now that the days are getting longer.

Feeling refreshed, I drove to the office ready to face a new day. It hasn’t been easy adjusting to city life after my year off hiking the Pacific Crest Trail, but little sojourns into the wilderness do help.

My route

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Hi, I'm Unicorn!

I am an avid hiker, traveler, and adventurer who is on the mission to explore hiking trails around the world.  I’m also obsessed with National Parks, long-distance trails and other outdoorsy things.

I hope to share this knowledge with you and inspire you to explore new hiking trails too!


  1. mizipatty

    Nicely done, Unicorn! I still cannot get the PCT life out of my head and will be going back in 2019. Also, will be doing a walkup attempt at the Wonderland Trail sometime during last week of July into the beginning of August. Michael wants to meet me in Seattle before or afterwards so maybe we can say Hi cuz I miss you so!

    • Unicorn

      I would love to see you when you’re in town Sunkist! You’ll love the Wonderland Trail – I’m sure I’ll be up there for some day hikes as soon as the snow melts out more. It’s such a magical place 😊


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