Carbon River Rain Forest Nature Trail

This is a half-mile nature walk at the Carbon River entrance, through one of Mount Rainier's rare inland rain forests. Two short paths leave the same junction. Walk each one out and back; together they make the fuller walk, but they do not form a connected loop. The mapped route is about 0.5 mile and takes roughly 20–30 minutes with time for the interpretive panels. Older descriptions of a 0.25-mile loop refer to the former route.

The start is across from the Carbon River Entrance Station. Fairfax Bridge on SR 165 was permanently closed to vehicles, bicycles and pedestrians in 2025, and the National Park Service says there is no public access from outside by road or alternate trail. Backpackers can still reach Carbon River from inside the park by the Wonderland Trail: the route from Sunrise to Ipsut Creek Campground is about 19 miles, then the former Carbon River Road continues roughly 5 miles to the entrance. Treat this as a backcountry side walk, not a stand-alone day hike. Overnight camping in the park requires a wilderness permit; confirm current access before planning.

The route passes beneath hemlock, cedar and spruce, with giant ferns, vine maple, skunk cabbage, huckleberry and devil's club in the understory. Soft dirt and forest duff alternate with cedar puncheon and short boardwalk sections; a small clear creek and the Water Lovers wayside are among the details to look for. Wet boards can be slick, and the far-side connection has been described as damaged, so turn back along each arm rather than trying to make a loop. Pets are prohibited beyond the Carbon River entrance.