Obsidian Trail loop

Access to the Obsidian Limited Entry Area, where this trail is located, requires a permit between June 15 and October 15. Both day-use and overnight permits are issued daily in limited numbers (30 day-use, 13 overnight), so it's crucial to reserve them early, typically starting the first Tuesday in April on Recreation.gov. Additionally, a Northwest Forest Pass or another valid recreation pass is required for parking at the trailhead.

The Obsidian Trail loop typically starts from the Obsidian Trailhead. Parking at the trailhead requires a Northwest Forest Pass or another valid recreation pass. Due to the limited entry permit system, parking availability is generally tied to having a valid permit for your chosen day.

Dogs are generally allowed on the trail, but it's important to be aware of the challenging terrain. Sections of sharp obsidian and lava rock can be hard on paws, so dog booties are highly recommended to protect your pet. Always keep your dog on a leash and follow Leave No Trace principles.

The trail is typically accessible from mid-July through mid-November, depending on when snow clears from Highway 242. For vibrant wildflower displays, late July and early August are ideal. If you prefer cooler temperatures and fewer crowds, late September and October offer a pleasant hiking experience.

The trail offers incredibly diverse terrain. You'll traverse sparse and dense forests, cross areas affected by the 2017 Separation Creek Fire, and navigate unique lava flows. The path also includes beautiful meadows and sections with significant elevation gain. Be prepared for sharp obsidian and lava rock, which can be challenging underfoot. Snow can persist into July, and you might encounter downed trees early in the season.

The route is rich with natural beauty. You'll encounter extensive black obsidian formations, which give the trail its name, and vibrant wildflower meadows in season. Spectacular mountain views include North and Middle Sister, Mount Washington, Three Fingered Jack, and Mount Jefferson. Don't miss Obsidian Falls, visible from the trail with a short side path for a closer look.

Yes, the Obsidian Trail loop connects with the Pacific Crest National Scenic Trail #2000, offering options for longer backpacking trips. It also shares sections with the Obsidian Trail #3528, Glacier Way #4336, and the Three Sisters Loop Trail.

This trail is rated as difficult. It's a challenging hike covering approximately 11.5 to 12 miles with an elevation gain of around 1,800 to 2,157 feet. Good physical fitness and sure-footedness are necessary, especially on the varied terrain that includes lava flows and steep sections.

The trail is renowned for its vast obsidian rock formations, a naturally occurring volcanic glass that shimmers across the landscape. Its location within the Three Sisters Wilderness provides diverse ecosystems, from lush meadows to stark lava fields. The limited entry permit system helps preserve its unique beauty, making it a truly special and sought-after hiking experience.

The trail does pass by crystal clear streams and small meadows with springs. However, it's always recommended to carry sufficient water for your entire hike, as natural water sources can be seasonal or require filtration. Do not rely solely on finding water along the route.

Given the trail's difficulty and varied terrain, essential items include plenty of water, high-energy snacks, sturdy hiking boots, and layers of clothing suitable for changing weather conditions. Sun protection (hat, sunscreen), a map and compass or GPS device, a first-aid kit, and dog booties if hiking with a pet are also highly recommended.