Mima Falls, Lost Valley, and McKenny Loop

The primary access point is the Mima Falls Trailhead. There is parking available there. Be aware that a shooting range is located within earshot of the trailhead, so gunfire might be audible during the initial part of your hike.

Yes, a Discover Pass is required for vehicle access to recreation lands managed by the Washington State Department of Natural Resources, which includes Capitol State Forest. You can purchase one online or at various vendors.

The full Mima Falls, Lost Valley, and McKenny Loop is considered a difficult hike, spanning over 34 kilometers (21 miles) with significant elevation gain. It is best suited for moderately experienced hikers. Shorter variations are possible, but the overall length and terrain make the full loop challenging for beginners or young children.

The trail offers varied terrain, including dense forests of Douglas fir and western hemlock, providing ample shade. You'll find relatively flat sections, especially in the Lost Valley, interspersed with steeper inclines on the McKenny Trail. While generally well-maintained, some spots can be muddy. Portions pass through recently logged areas, which are more exposed and sandy. As a multi-use trail, you may also encounter horse droppings.

Highlights include the beautiful Mima Falls, a cascading waterfall perfect for a break. The Lost Valley offers a secluded area rich in biodiversity. Near the trailhead, you can also explore the unique geological formations of the Mima Mounds Natural Area Preserve. The route also passes by the Fall Creek Campground.

The Lost Valley is known for its biodiversity, where you might spot black-tailed deer, various bird species, and occasionally black bears. The forest features lush greenery, diverse ferns, an understory of elderberry and salmonberry, and mosses growing thickly on maples and firs, creating a very green atmosphere.

Yes, dogs are generally allowed on this trail. However, it is a multi-use trail shared with equestrians and mountain bikers, so always keep your dog on a leash and be mindful of other trail users.

This trail is a year-round destination, offering access to nature in all seasons. However, conditions can vary, with potential mud in wetter months. Always check current trail conditions before heading out.

Yes, the route also passes through sections of the Lost Valley, Mima Falls West, McKenny, and D-4600 trails.

Given its length and difficulty, hikers should carry sufficient water and snacks, as facilities are not available along the trail. Sturdy hiking boots are highly recommended. A navigation tool is also advisable, especially in denser forest sections, as while generally well-marked, it can be helpful.

There are no facilities directly along the trail itself. Hikers should be prepared to be self-sufficient with water, food, and other necessities. The Fall Creek Campground is along the route, but services there may be limited.