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Deschutes County
Sisters

Peterson Ridge Trail Long Loop

Hard

Peterson Ridge Trail Long Loop

08:33

32.4km

300m

Hiking

Hike the difficult 20.1-mile Peterson Ridge Trail Long Loop in Deschutes National Forest, featuring panoramic mountain views and varied terr

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Whychus Creek Wild and Scenic River (Scenic Area)

Deschutes National Forest

Waypoints

A

Start point

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1

1.69 km

Peterson Ridge Trail

Highlight (Segment) • Trail

A stone's throw from FivePine campus, Peterson Ridge Trail welcomes all skill levels. Reach Eagle Rock for breathtaking 360-degree views of the Cascades.

Tip by

2

16.3 km

River Information Viewpoint

Highlight • Viewpoint

There is a nice bench here with information on the local fish that inhabit the river. It is a great spot to view mountains in the distance. Mt. Hood, Mt. …

Tip by

3

16.7 km

Whychus Creek Scenic Overlook

Highlight • Viewpoint

This spot has a fantastic view of Whychus Creek. On a clear day, you can enjoy sweeping views of the surrounding Three Sisters mountains and Broken Top. It is the perfect spot to take unforgettable photos.

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B

32.4 km

End point

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Way Types & Surfaces

Way Types

28.6 km

3.65 km

138 m

< 100 m

Surfaces

28.2 km

3.06 km

832 m

153 m

< 100 m

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Elevation

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Weather

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Sunday 12 July

31°C

11°C

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Frequently Asked Questions

Where can I park to access the Peterson Ridge Trail Long Loop?

The Peterson Ridge Trail Long Loop is located near Sisters, Oregon. There are several access points to the Peterson Ridge Trail system, and you'll find dedicated trailhead parking available. It's a popular area, so arriving earlier in the day is often recommended, especially on weekends.

Is the Peterson Ridge Trail Long Loop dog-friendly?

Yes, the Peterson Ridge Trail system is generally dog-friendly. However, as it's a multi-use trail popular with mountain bikers and equestrians, it's crucial to keep your dog on a leash and under control to ensure safety for all users and wildlife. Always pack out any waste.

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

The Peterson Ridge Trail Long Loop is enjoyable in spring, summer, and fall. Spring brings wildflowers, while fall offers pleasant temperatures and changing foliage. Summer can be warm and dusty, so an early start is advisable. Winter conditions can vary, with snow and ice possible, which might make some sections challenging.

Do I need a permit or pay an entrance fee to hike in Deschutes National Forest?

For day-use access to the Peterson Ridge Trail Long Loop within the Deschutes National Forest, a specific permit or entrance fee is generally not required. However, always check the latest regulations from the U.S. Forest Service before your visit, especially if you plan to park at a developed trailhead that might require a recreation pass.

What is the terrain like on the Peterson Ridge Trail Long Loop?

The terrain is varied. The initial section off pavement can be uneven and rocky before leveling out. Overall, it features mostly single-track trails and some old forest service roads. You'll encounter technical obstacles like rocks and roots, especially at higher elevations. During summer, the trail can be dusty.

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

You'll experience diverse scenery, from thinned trees and open areas with manzanita bushes to ponderosa pine forests and old-growth juniper. The trail parallels the Whychus Creek canal in parts. Keep an eye out for wildlife, especially in the quieter sections. As you climb, panoramic mountain views of peaks like South Sister, Mt. Jefferson, and Broken Top open up to the west.

Are there any notable viewpoints or landmarks along the route?

Yes, the trail offers several scenic overlooks. You'll pass by the River Information Viewpoint and the Whychus Creek Scenic Overlook. Other viewpoints, like Peak View Overlook and Peterson Ridge Overlook, provide expansive mountain vistas of the surrounding Cascade peaks.

Is the Peterson Ridge Trail Long Loop suitable for beginners?

Given its length of over 32 km (20 miles) and some technical sections with rocks and roots, the Peterson Ridge Trail Long Loop is generally considered to be of difficult difficulty for hiking. While much of the trail is relatively level, its overall distance and some challenging parts make it more suitable for hikers with moderate to advanced experience rather than beginners.

Does this route intersect with other trails in the area?

Yes, the Peterson Ridge Trail Long Loop is part of an extensive network. This route specifically utilizes sections of the Peterson Ridge Trail, Whychus Creek Trail, Whychus Creek Overlook Trail #4069, Cougar Draw Trail #4071, and several National Forest Development Roads (e.g., 1608-600, 1608-200, 1608-500). The system's 'ladder design' allows for many connections and customizable loops.

How does the 'ladder system' of the Peterson Ridge Trail network work?

The Peterson Ridge Trail system is uniquely designed with parallel East and West legs connected by numerous cross trails. This 'ladder system' allows users to easily customize their route, creating loops of varying lengths and difficulties. The trails are well-signed with numbered junction posts, making navigation straightforward even with the many intersecting paths.

What are the winter conditions like on the Peterson Ridge Trail Long Loop?

During winter, the Peterson Ridge Trail Long Loop can experience snow and ice, especially at higher elevations or during colder periods. While some sections might remain accessible, others could become challenging or impassable without appropriate gear like snowshoes or microspikes. Always check local weather and trail conditions before heading out in winter.

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