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Hiking trails & Routes
United States
Washington
King County
Issaquah

Flowing Fir Loop

Moderate

3.4

(16)

88

hikers

Flowing Fir Loop

02:51

10.1km

220m

Hiking

Embark on the Flowing Fir Loop, a moderate hike spanning 6.2 miles (10.1 km) with a total elevation gain of 735 feet (224 metres). You can expect to complete this route in about 2 hours and 50 minutes. As you hike, you will find yourself surrounded by a diverse, mature…

Last updated: April 23, 2026

Waypoints

A

Start point

Parking

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1

3.82 km

Flowing Fur Loop

Highlight (Segment) • Trail

It offers a well-maintained path with a gradual incline, surrounded by a dense forested environment. It also provides a pleasant hiking experience with its serene ambiance.

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B

10.1 km

End point

Parking

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Way Types & Surfaces

Way Types

9.16 km

900 m

Surfaces

8.81 km

438 m

283 m

262 m

200 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.

Highest point (360 m)

Lowest point (190 m)

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Weather

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Today

Tuesday 14 July

29°C

11°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

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Frequently Asked Questions

Where can I park to access the Flowing Fir Loop?

The Flowing Fir Loop is located within Grand Ridge Park in Issaquah, Washington. You can typically find parking at the main Grand Ridge Park trailhead. Specific parking details are usually available on the park's official website or local trail guides.

Is the Flowing Fir Loop dog-friendly?

Yes, dogs are generally allowed on the trails in Grand Ridge Park, including the Flowing Fir Loop. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all trail users. Please remember to pack out all pet waste.

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

The Flowing Fir Loop can be enjoyed year-round. During certain seasons, you might encounter abundant mushrooms and strongly flowing streams, which enhance the forest ambiance. For comfortable hiking, spring through fall offers pleasant weather. Winter hiking is also possible, but be prepared for potentially wet or muddy conditions.

Are there any permits or fees required for hiking in Grand Ridge Park?

Generally, there are no specific permits or entrance fees required to hike the trails within Grand Ridge Park, including the Flowing Fir Loop. However, it's always a good idea to check the official Grand Ridge Park website for the most current regulations before your visit.

What is the terrain like on the Flowing Fir Loop?

The trail is primarily a singletrack path. While some sections are relatively flat, it does feature uneven terrain and can be a bit gullied and rocky in places, especially due to its shared use with mountain bikers. It's generally considered easy to intermediate for hikers.

What kind of scenery and wildlife can I expect to see?

You'll be immersed in a beautiful, mature forest dominated by Western Red Cedars. The unique logging history has created a diverse ecosystem with varied tree ages and a robust understory. Keep an eye out for large burnt snags, abundant mushrooms (seasonally), and strongly flowing streams. There are also opportunities for 'peekaboo views' of downtown Seattle and Bellevue. Wildlife in Grand Ridge Park includes bears, owls, cougars, and chipmunks.

Is the Flowing Fir Loop shared with mountain bikers?

Yes, the Flowing Fir Loop is a multi-use trail shared by both hikers and mountain bikers. Please be aware of your surroundings and practice trail etiquette by yielding to uphill traffic and being mindful of other users.

Does the trail intersect other well-known paths?

Yes, the route is part of the larger Grand Ridge Park trail system and intersects with several other paths. You'll find it connects with sections of the Coal Mine Loop, Grand Ridge Trail, Sam Dog Creek, and East Fork Trail, offering opportunities to extend or vary your hike.

Is the Flowing Fir Loop suitable for families with children?

Given its 'Easy/Intermediate' rating and beautiful forest setting, the trail can be suitable for families. However, be aware that some sections have uneven and rocky terrain, which might be challenging for very young children or strollers. Consider the fitness level of your family members.

What makes the forest on this trail unique?

The forest in Grand Ridge Park, including along the Flowing Fir Loop, is unique due to its history of 'high grading' logging rather than clear-cutting. This selective cutting has allowed the forest to develop a diverse species composition, varied tree ages, and a robust understory, creating a more mature and biodiverse environment than many other areas.

Are there any specific viewpoints or landmarks along the way?

While the primary draw is the immersive forest experience, the trail offers occasional 'peekaboo views' of downtown Seattle and Bellevue through the trees. The highlight of the route itself is the Flowing Fir Loop, which showcases the mature forest and its unique ecosystem.

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