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Routes
Hiking trails & Routes
United States
Oregon
Benton County
Adair Village

Bonzai Loop

Moderate

4.9

(3483)

16,618

hikers

Bonzai Loop

03:01

10.4km

270m

Hiking

The Bonzai Loop is a 6.5-mile (10.4 km) hiking route rated moderate, located in McDonald Research Forest. You will gain 879 feet (268 metres) of elevation over an estimated 3 hours, making it a good option for a half-day adventure. This popular trail offers a varied experience for those looking…

Last updated: March 7, 2026

Waypoints

A

Start point

Parking

Get Directions

1

5.71 km

Powder House

Highlight (Segment) • Monument

As you follow this trail, you'll come across the Cap House, a cabin constructed by the Civilian Conservation Corps (CCC) to store blasting caps for various projects, including stump removal …

Tip by

2

7.82 km

Cronemiller Lake

Highlight • Lake

The Civilian Conservation Corps (CCC) built this lake in 1937 as part of their effort to enhance America's public lands and parks. Nowadays, the lake serves as a water source for Oregon State University.

Tip by

B

10.4 km

End point

Parking

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Way Types & Surfaces

Way Types

6.14 km

4.29 km

Surfaces

5.19 km

3.75 km

1.02 km

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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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Wednesday 27 May

25°C

9°C

-- %

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Bonzai Loop trail?

The Bonzai Loop is primarily located in the McDonald Forest near Corvallis, Oregon. Specific parking information for the trailhead is often available through Oregon State University Research Forests, which manages the area. It's advisable to check their official website for the most current parking locations and access points, especially near Peavy Arboretum or Lewisburg Saddle.

Is the Bonzai Loop dog-friendly?

Yes, dogs are allowed on the Bonzai Loop trail. However, please remember that they should be kept on a leash where required by the Oregon State University Research Forests regulations.

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

The Bonzai Loop can be enjoyed year-round. However, the trail is primarily natural-tread dirt, so it can become quite muddy during the rainy season. For the most comfortable hiking experience, consider visiting during drier months.

Do I need a permit or pay an entrance fee to use the trails in McDonald Forest?

The Bonzai Loop is part of the OSU Research Forests. Generally, there are no entrance fees for day use of the trails. However, it's always a good idea to check the Oregon State University Research Forests website for any specific permit requirements or updated regulations, especially for group activities or special uses.

What is the terrain like on the Bonzai Loop?

The trail features a natural-tread (dirt) singletrack with some sections on old forest roads. It includes rolling terrain, descents, and climbs, with parts characterized by close vegetation and tight turns, and other sections opening onto rocky, abandoned roadbeds. You'll pass through plantations of Douglas-fir trees.

Is the Bonzai Loop suitable for beginners?

The Bonzai Loop is generally rated as 'moderate' for hiking. While some sections can be steep, particularly an initial part described as Road 562, the trail is generally easy to follow. Beginners with a reasonable level of fitness should find it manageable.

What notable landmarks or features can I see along the route?

Along the Bonzai Loop, you can encounter some interesting points. These include the Powder House and the scenic Cronemiller Lake.

Does the Bonzai Loop connect with other trails?

Yes, the Bonzai Loop offers excellent connectivity. It links to other trails like Dave's Trail and Vineyard Mountain, providing multi-use access between Peavy Arboretum and Lewisburg Saddle. The route also passes through sections of the Bonzai Trail, Section 36 Loop Trail, Powderhouse Trail, Calloway Creek Trail, and Dave's Trail.

Is this trail only for hiking, or can other activities be done?

The Bonzai Loop is a unique multi-use trail in the McDonald Forest. Unlike some other trails in the Peavy Arboretum area, it is open to hikers, mountain bikers, trail runners, and equestrians year-round.

Are there any specific regulations or closures to be aware of in the McDonald Forest?

The McDonald Forest is actively managed by Oregon State University Research Forests. Hikers should be aware that some trails, including potentially sections of the Bonzai Loop, may be closed seasonally or due to logging operations. Always check for current conditions and regulations before heading out.

What makes the Bonzai Loop a unique option in the McDonald Forest?

Its primary distinction is its multi-use access. While many trails in the Peavy Arboretum area are restricted to pedestrians, the Bonzai Loop welcomes hikers, mountain bikers, trail runners, and equestrians year-round, making it a versatile choice for various outdoor enthusiasts.

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5.0

14

Lewisburg Saddle to Dimple Hill Loop

02:33h

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200m

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