Canyon, Rough Go and Cobblestone Loop

This loop, which includes the Canyon, Rough Go, and Cobblestone trails, is considered moderate to challenging for hiking. The terrain is notably rugged and technical, especially the Rough Go Trail, which is described as "super chunky" and very rocky. The Cobblestone Trail also features a rocky path with some steeper sections. Hikers should be prepared for navigating many individual, often unsecured, rocks, which can become particularly slick after rain.

The Canyon, Rough Go and Cobblestone Loop is approximately 12.3 kilometers (7.6 miles) long. Based on average hiking speeds, it typically takes around 3 hours and 26 minutes to complete.

The loop is primarily located within Annadel State Park in Santa Rosa, California. A common starting point is the Bobcat / Belly Button Trailhead. Parking information for Annadel State Park should be checked directly with the park for current availability and regulations.

As this trail is located within Trione-Annadel State Park, standard California State Park entrance fees may apply. It's advisable to check the official Annadel State Park website for current parking fees, day-use fees, or any specific permit requirements before your visit.

Dogs are generally permitted on paved roads and fire trails within Trione-Annadel State Park, but often not on single-track trails like parts of the Canyon, Rough Go, and Cobblestone trails. Always check the latest regulations on the official Annadel State Park website regarding dog access and leash requirements to ensure compliance.

The trails can be enjoyed year-round, but conditions vary. Spring offers wildflowers and lush greenery, while fall provides cooler temperatures. Be aware that the rocky sections can become very slick after rain, making winter hiking more challenging. Summer can be warm, so an early start is recommended.

The loop winds through the natural beauty of Annadel State Park. You can expect diverse flora and fauna, including deer, turkeys, rabbits, squirrels, lizards, owls, and other raptors. The park features forests, lakes like Lake Ilsanjo, rivers, and wildflowers. Some sections of the Cobblestone Trail pass through recent fire burn zones, offering a unique landscape.

Yes, this loop is part of a larger network within Annadel State Park. The route also passes through sections of the Bay Area Ridge Trail - 01 - North Bay, Rough-Go Trail, Cobblestone Trail, and Canyon Trail, offering opportunities to explore further if desired.

These trails are very popular for mountain biking in addition to hiking. Hikers should be aware of shared trail use and be prepared to encounter cyclists, especially on technical sections. Maintaining awareness of your surroundings and yielding appropriately is important for everyone's safety.

Beyond the challenging terrain, the loop offers scenic views of the park's natural beauty. The Cobblestone Trail starts with a shaded climb and descends through a quarry. You'll also pass by Lake Ilsanjo, a prominent feature within the park. Keep an eye out for wildlife, particularly deer in the summer.