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Routes
Hiking trails & Routes
United States
Washington
King County
Union Hill-Novelty Hill

Kari's Bog Trail

Easy

3.2

(25)

48

hikers

Kari's Bog Trail

00:35

2.19km

20m

Hiking

Hike Kari's Bog Trail, an easy 1.4-mile route through a unique bog ecosystem in Redmond Watershed Preserve, featuring a boardwalk.

Last updated: February 26, 2026

Waypoints

A

Start point

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1.18 km

North Irrigation Lake

Lake

B

2.19 km

End point

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Way Types & Surfaces

Way Types

2.19 km

Surfaces

1.86 km

306 m

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Elevation

Elevation

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Today

Friday 8 May

17°C

8°C

0 %

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Max wind speed: 16.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park for Kari's Bog Trail?

Parking for the trail is typically available at the main entrance to the Redmond Watershed Preserve. Specific parking information is usually well-marked at the preserve's access points.

Is Kari's Bog Trail dog-friendly?

Yes, the trail is generally dog-friendly. However, dogs must be kept on a leash at all times to protect the delicate bog ecosystem and local wildlife. Please remember to pack out any waste.

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

The trail can be enjoyed year-round, but spring and summer are particularly vibrant, with wildflowers blooming and increased bird activity. Be aware that after rainfall, especially in fall and winter, sections can become muddy and uneven, so sturdy, waterproof footwear is recommended.

Are there any permits or fees required to access the Redmond Watershed Preserve?

Access to the Redmond Watershed Preserve, where Kari's Bog Trail is located, typically does not require a specific hiking permit or entrance fee for day use. However, it's always a good idea to check the official King County or Redmond Parks websites for any updated regulations or special event requirements before your visit.

What is the terrain like on Kari's Bog Trail?

The trail is predominantly flat with minimal elevation gain, making it accessible for many. While some sections feature gravel paths suitable for hiking and even gravel biking, other parts can be muddy and uneven, particularly after rain. A picturesque wooden boardwalk helps traverse wetter areas, and an observation deck offers views over the bog.

What kind of scenery and natural features can I expect to see?

You'll experience a unique and ancient bog ecosystem, a remnant from the last Ice Age. The trail showcases diverse plant life, including skunk cabbage, sedges, and sphagnum moss, with wildflowers in spring and summer. It's also a haven for birdwatching, with sightings of red-winged blackbirds, marsh wrens, and various waterfowl, plus small mammals like beavers and muskrats. Don't miss the wooden boardwalk and the observation deck for prime viewing spots.

Is Kari's Bog Trail a loop or an out-and-back route?

Kari's Bog Trail is primarily an out-and-back route. While it connects with other trails in the Redmond Watershed Preserve, the main bog trail itself follows a linear path to its end and back.

What is the origin of the name 'Kari's Bog'?

The bog is officially named 'Kari's Bog' in honor of environmental scientist Karin Osterhaug. Her dedicated efforts were crucial in reclassifying the wetland as a sphagnum bog and securing its protection as a Category I wetland, preserving it for future generations.

Does the trail intersect with other paths in the area?

Yes, while hiking Kari's Bog Trail, you may notice it intersects with or runs alongside other paths within the Redmond Watershed Preserve. Specifically, the route also passes through sections of the Collin Creek Trail, the Redmond Ridge Trail, and the Cascade Club Trail.

Is the trail suitable for families with children?

Yes, the trail is considered family-friendly due to its relatively flat terrain and engaging natural features like the boardwalk and observation deck. It's a great opportunity for children to learn about a unique bog ecosystem and observe wildlife. Just be mindful of potential muddy sections, especially with younger children.

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