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United States
Oregon
Washington County

Bumping Knots Loop

Moderate

5.0

(8277)

8,278

hikers

Bumping Knots Loop

03:01

10.4km

270m

Hiking

Hike the moderate 6.5-mile Bumping Knots Loop in L.L. Stub Stewart State Park, featuring forests, creek views, and an old railroad bridge.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

860 m

Forest Trail in L.L. Stub Stewart State Park

Highlight • Trail

Just 34 miles west of Portland is a super good outdoor heaven. Set on a cool forested hillside, LL Stub Stewart State Park offers a great variety of camping and …

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2

4.53 km

Bumping Knots Loop

Highlight (Segment) • Trail

Bumping Knots is one of the longer trails in the park. It is a 6 mile lollipop loop that traces an old logging road along a length of Williams Creek. …

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B

10.4 km

End point

Parking

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Way Types & Surfaces

Way Types

7.97 km

1.81 km

314 m

304 m

Surfaces

9.98 km

304 m

105 m

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Elevation

Elevation

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Frequently Asked Questions

What is the Bumping Knots Loop trail like?

This trail offers a diverse hiking experience through the forested landscapes of L.L. Stub Stewart State Park. You'll encounter a mix of old logging roads and purpose-built singletrack, winding through shaded forests with ferns and wildflowers. It also follows Williams Creek through a valley, and climbs to a ridge with occasional eastward views. A notable feature is an old railroad bridge you'll pass over.

How difficult is this hike?

The Bumping Knots Loop is generally considered a moderate hike. While it's rated 'Green' for overall difficulty, hikers should be prepared for several steep climbs and descents. It's also a multi-use trail, shared with mountain bikers and equestrians, which can affect trail conditions.

Is the Bumping Knots Loop dog-friendly?

Yes, leashed dogs are welcome on the Bumping Knots Loop trail. Please ensure your dog remains on a leash and that you clean up after them to help keep the park enjoyable for everyone.

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

The best time to hike the Bumping Knots Loop is typically between May and November. Outside of these months, the valley section along Williams Creek can become quite marshy and muddy due to the wet season.

Where can I park to access the trailhead?

The Bumping Knots Loop starts from the Welcome Centre at L.L. Stub Stewart State Park. You'll find parking available there, providing convenient access to the trailhead.

Are there any fees or permits required to hike in L.L. Stub Stewart State Park?

L.L. Stub Stewart State Park typically requires a day-use parking fee or a valid Oregon State Parks Pass. Check the official Oregon State Parks website for the most current fee information and any specific permit requirements.

What kind of natural features or landmarks will I see?

Along the way, you'll experience shaded forests rich with ferns and wildflowers like tiger lilies, columbine, and hedge nettle. The trail also passes over an old railroad bridge, and you'll find yourself on sections built on historical logging roads. You'll also pass through the Forest Trail in L.L. Stub Stewart State Park.

Does the trail connect with other paths in the park?

Yes, the Bumping Knots Loop is part of the extensive trail network within L.L. Stub Stewart State Park. The route itself covers a significant portion of the Bumping Knots Loop trail (61%) and also intersects with sections of the Hollies Point of View Trail, Timber Beast Trail, and the Banks-Vernonia Trail.

Is the Bumping Knots Loop suitable for families with children?

Given its moderate difficulty with several steep sections, it might be challenging for very young children or those unaccustomed to hiking. However, active families with older children who are fit and experienced hikers should find it enjoyable.

What is the shape of the trail?

The Bumping Knots Loop has a 'lollipop' shape. This means you'll walk in on a single path, complete a loop, and then return on the same path you started on.

What should I bring for a hike on this trail?

For this moderate hike, it's recommended to bring plenty of water, snacks, appropriate footwear for varied terrain (especially if it's been wet), and layers of clothing. Given it's a multi-use trail, be aware of mountain bikers and equestrians.

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