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Routes
Hiking trails & Routes
United States
Washington
King County
King County
Redmond

Trillium Trail Loop

Easy

4.5

(7799)

7,800

hikers

Trillium Trail Loop

00:50

3.14km

30m

Hiking

Hike the easy 1.9-mile Trillium Trail Loop in Redmond Watershed Preserve, featuring lush forests and a picturesque wooden bridge.

Last updated: February 26, 2026

Waypoints

A

Trout Loop Trail Trailhead

Highlight • Trail

This is a fantastic spot for a short loop hike through the Redmond Watershed Preserve. The trail is very well maintained and provides an opportunity to immerse yourself in the surrounding forest, enjoying the sights and smells of nature.

Tip by

1

340 m

Trillium Trail Trailhead

Highlight • Trail

This trail is the most traveled in the area, is very well maintained and is an excellent introduction to the Watershed Preserve. Trillium Trail has the most elevation gain in …

Tip by

B

3.14 km

End point

Parking

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Way Types & Surfaces

Way Types

2.10 km

987 m

< 100 m

Surfaces

1.65 km

970 m

457 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

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Today

Thursday 7 May

18°C

9°C

17 %

Additional weather tips

Max wind speed: 6.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it take to hike the Trillium Trail Loop?

The Trillium Trail Loop is an easy hike, typically taking around 50 minutes to complete. This estimate is for continuous walking and does not include stops for enjoying the scenery or wildlife.

What is the difficulty level of this trail?

This trail is rated as easy, making it suitable for most hikers, including beginners and families. It features gentle terrain with minimal elevation changes.

Where does the Trillium Trail Loop start and where can I park?

The trail can be accessed from multiple points within the Redmond Watershed Preserve. Key access points include the Trout Loop Trail Trailhead and the Trillium Trail Trailhead. Parking is available at designated areas within the preserve.

Is the Trillium Trail Loop dog-friendly?

Yes, dogs are generally permitted on the Trillium Trail Loop. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all visitors. Please remember to clean up after your pet.

What is the best time of year to hike this trail?

The Trillium Trail Loop is enjoyable year-round. Spring offers lush greenery and blooming trillium flowers, while autumn provides beautiful fall foliage. Summer is pleasant for shaded walks, and winter can offer a serene, quiet experience, though conditions may vary.

What kind of terrain can I expect on the Trillium Trail Loop?

The trail features a mix of natural surfaces, winding through a lush forest environment. You'll encounter towering Douglas firs and western red cedars, with moss often covering parts of the trail. The path is generally well-maintained and easy to navigate.

What wildlife and plants might I see along the way?

The Trillium Trail Loop is rich in Pacific Northwest flora and fauna. Hikers can spot various native trees, shrubs, and ground-covering plants, including the namesake trillium flowers in spring. Wildlife sightings may include deer and a variety of bird species.

Does the trail intersect with other paths?

Yes, the route intersects with several other trails within the Redmond Watershed Preserve. You'll find sections that overlap with the Trillium Trail, Pipeline Regional Trail, Treefrog Loop Trail, and PSE Trail, offering opportunities to extend or vary your hike.

Are there any entrance fees or permits required for the Redmond Watershed Preserve?

Generally, there are no entrance fees or permits required for day use at the Redmond Watershed Preserve. However, it's always a good idea to check the official King County Parks website or local signage for any updated regulations or specific activity permits.

What should I bring for a hike on the Trillium Trail Loop?

For this easy trail, comfortable walking shoes, water, and appropriate clothing for the weather are recommended. Depending on the season, consider bringing rain gear, sun protection, and insect repellent. Binoculars can enhance wildlife viewing.

Are there any notable viewpoints or landmarks along the route?

While the Trillium Trail Loop primarily offers immersive forest scenery, the lush greenery and towering trees themselves are a highlight. The trail includes a picturesque wooden bridge over a small creek, adding to the scenic experience.

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4.8

169

Discovery Park and Lighthouse Loop Trail

02:21h

8.44km

160m

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