Rain Forest Loop
What to Expect
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
Pro Tips
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.
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.
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.
More Trails in Mount Rainier
Hike to Gobblers Knob Fire Lookout
Hike to Shriner Peak Fire Lookout
Hike to Silver Falls