Devil's Hole Trail

Embark on the Rocky Ridge, Devil's Hole, and Sycamore Trail Loop for a diverse hiking experience in the Las Trampas Regional Wilderness. This moderate route spans 6.4 miles (10.3 km) and involves a significant elevation gain of 1689 feet (515 metres), typically taking around 3 hours and 27 minutes to complete. You will traverse rugged ridge lines offering panoramic vistas of the San Ramon area, including distant views of Mount Diablo and the San Francisco Bay, before descending into lush, shaded groves with mature oak trees and unique rocky outcroppings.

For your visit, the Bollinger Canyon Trailhead provides convenient access with ample parking, restrooms, and drinking water available. It is advisable to wear sturdy hiking boots to navigate the varied terrain and carry plenty of water, especially for the steeper sections of the climb. If you plan to bring your dog, remember that leash requirements may apply, so check local regulations before you go.

This loop stands out for its remarkable blend of landscapes, transitioning from exposed, scenic ridges to the contrasting tranquility of the Sycamore Trail's wildflowers and the geological interest of the Devil's Hole Trail. It offers a comprehensive tour of the wilderness's varied ecosystems and geological features, making it a rewarding choice if you are looking for a challenging yet accessible hike with a wide range of natural beauty.