Mount Rainier National Park

Rain Forest Loop

Solitude SeekersNature PhotographyFamilies
0 mi Distance
Varies Estimated Time
Out & Back Trail Type

What to Expect

This is one of the quietest, most otherworldly walks in the entire national park system. The Rain Forest Loop winds through the Carbon River valley — the only inland temperate rainforest in the contiguous United States — where massive old-growth Sitka spruce, western red cedar, and Douglas fir are draped in thick curtains of club moss and licorice fern. The trail is short, flat, and soft underfoot, carpeted with decomposing needles and bordered by nurse logs sprouting entire gardens of new growth. Light filters through the canopy in pale green shafts, and the air feels ten degrees cooler and noticeably wetter than anywhere else on the mountain. There are no dramatic viewpoints or summit payoffs here — the forest itself is the destination. This trail is perfect for anyone who wants to feel like they wandered into the Pacific Northwest's version of a cathedral.
Solitude SeekersNature PhotographyFamiliesOld-Growth LoversRainy Day Hike

Safety Advisory

The Carbon River is prone to flooding and the access road washes out periodically — check the NPS website or call the ranger station before making the drive, especially in fall and winter.

The trail stays damp year-round and sections can be slippery with mud and wet roots. Waterproof boots with good tread are not optional here.

Trail Details

Estimated Time Varies
Trail Type Out & Back
Pets Not allowed
Season Year-round
Trailhead Rain Forest Loop

Pro Tips

Trail Tip

The Carbon River entrance is the least-visited corner of Mount Rainier, so you'll likely have the loop nearly to yourself even on summer weekends — arrive by mid-morning and you may not see another soul.

Trail Tip

The road to the Carbon River trailhead has been closed to vehicles for years, adding a flat five-mile walk (or bike ride) along the old road before you even reach the loop — bring a bike to cut the approach in half and save your legs.

Trail Tip

Bring a macro lens or your phone's close-up mode. The real show here is small-scale: shelf fungi, banana slugs the size of your finger, and intricate moss patterns that photograph beautifully in the flat, diffused light of an overcast day.

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3 campgrounds, 100 trails, 1.6M annual visitors

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