Carbon River Trail

As of April 14, 2025, access to the Carbon River and Mowich Lake entrances via SR165 is closed due to the Fairfax Bridge closure. There is currently no alternate route for vehicles, bicyclists, or pedestrians to reach the trailhead.

The trail primarily follows an old roadbed, so it's mostly gravel, with sections of dirt and rock. You might encounter fresh gravel, fallen trees, or debris, especially beyond the first mile. During shoulder seasons, it can be muddy. While the initial half-mile is paved, a mountain bike (hardtail or rigid) or a gravel bike is recommended for the varied surface. Experienced riders might manage with thicker road or touring tires, but be prepared to walk your bike in some sections.

You'll ride through a lush, low-elevation old-growth temperate rainforest, featuring giant ferns, maples, spruce, and moss-draped Western Red Cedars, creating a 'magical forest' atmosphere. The route parallels the Carbon River, which is often visible 'raging in its gravel and boulders'. While the trail itself doesn't offer views of Mount Rainier, you can find picturesque waterfalls like Ranger Falls, Chenuis Falls, and Ipsut Falls via short side trails.

The trail has a very gentle and consistent grade, typically around 2%, making it generally easy to moderate for touring cyclists. However, the varied surface of dirt, gravel, and rock can be challenging for novice riders. If you're a beginner, be prepared for potential sections where you might need to dismount and walk your bike, especially if conditions are muddy or there's debris.

The relatively low elevation (starting around 1,900 feet) makes it an accessible option for exploration year-round. However, for the most comfortable riding conditions, late spring through early fall is generally best to avoid excessive mud and debris from winter storms. Be aware that shoulder seasons can still bring muddy conditions.

Yes, dogs are permitted on the Carbon River Trail. However, within Mount Rainier National Park, all pets must be on a leash no longer than 6 feet and are generally restricted to paved roads, campgrounds, and specified trails like this one. Always pack out pet waste.

Yes, the Carbon River Trail is located within Mount Rainier National Park, so standard park entrance fees apply. You can find detailed information on fees and passes on the official NPS website: nps.gov. No additional permits are typically required for day-use cycling on this trail.

Yes, the Carbon River Trail serves as a crucial access point to numerous hiking trails. It connects to paths leading to Ipsut Falls, Ranger Falls, Green Lake, and ultimately the Carbon Glacier and the iconic Wonderland Trail. The route also passes through sections of the Carbon Glacier Trail, Lake James Trail, and Green Lake Trail.

The trail itself is quite remote, immersing you in wilderness. Ipsut Creek Campground, once a car campground, is now a backcountry site exclusively for hikers and bikers, offering overnight possibilities if you have a permit. For those looking to combine cycling with hiking, bike racks are conveniently located at various trailheads along the route. There are no cafes or pubs directly on the trail.

Given the varied terrain and potential for debris, it's wise to pack a repair kit, including a spare tube and pump. Bring plenty of water, as sources may be limited or require filtration. Layers of clothing are recommended due to the rainforest environment, and rain gear is always a good idea. Snacks, a first-aid kit, and navigation tools are also essential. Don't forget bear spray and a bell to alert wildlife and other trail users.

The Carbon River Trail is primarily an out-and-back route for touring cyclists. The main section to Ipsut Creek Campground is approximately 10 miles one way, making it a 20-mile round trip. While there are intersecting hiking trails, the primary cycling experience is linear.