Stairstep Falls & Barnabe Mountain loop — Samuel P. Taylor State Park

No, this loop is considered difficult due to its length of approximately 13.7 km (8.5 miles) and significant elevation gain of about 447 meters (1,466 feet). It's best suited for experienced trail runners or hikers with good fitness, rather than casual joggers or beginners.

The terrain is quite varied. You'll encounter paved sections along Devil's Gulch Road, dirt trails following the river, and well-maintained switchbacks on Bill's Trail. Expect uneven ground, steep ascents, and potentially rutted or muddy sections, especially on the Riding and Hiking Trail segments.

Key highlights include the seasonal Stairstep Falls, which is most impressive after rain, and the summit of Barnabe Mountain. From Barnabe Mountain, you'll get panoramic views of the Marin Hills, San Geronimo Valley, and even Mount Tamalpais on clear days. You'll also pass through lush forests and along tranquil river sections.

Parking is available within Samuel P. Taylor State Park. The loop typically starts near Devil's Gulch Road, which is accessible from the main park entrance. Check the official park website for specific parking areas and any associated fees.

Dogs are generally allowed in Samuel P. Taylor State Park on paved roads and in developed areas, but typically not on unpaved trails like many sections of this loop. Always check the latest regulations on the official California State Parks website for specific trail restrictions before bringing your dog.

Spring is excellent for wildflowers and lush greenery, and the Stairstep Falls will likely be flowing well. Early winter can offer a chance to see spawning Coho Salmon in the streams. For the best views from Barnabe Mountain, clear days are ideal, which are more common outside of the foggy summer months.

Samuel P. Taylor State Park typically charges a day-use fee for vehicle entry. You can find current fee information and any specific permit requirements on the official California State Parks website.

The park is home to diverse wildlife. You might spot young trout in the river, especially along Devil's Gulch. In early winter, keep an eye out for spawning Coho Salmon. The varied habitats also support various bird species and other forest creatures.

While public transportation options to Samuel P. Taylor State Park exist, they can be limited. It's advisable to check local Marin Transit schedules or other regional services for the most up-to-date information on routes and stops that serve the park area.

Given the trail's difficulty and varied terrain, pack plenty of water, snacks, and wear sturdy trail running shoes or hiking boots. Layers of clothing are recommended as temperatures can change, and consider bringing trekking poles for the steep sections. A map or GPS device is also wise.

The climb to Barnabe Mountain, particularly via Bill's Trail, involves strenuous ascents through numerous switchbacks. This section requires good stamina and is a primary reason for the trail's 'difficult' rating.