Summit Lake

Embark on the Four Lakes and Siligo Peak Loop, a challenging hike through the Trinity Alps Wilderness. This difficult 12.3-mile (19.9 km) route demands a significant effort, climbing 5583 feet (1702 metres) over an estimated 7 hours and 22 minutes. As you traverse diverse alpine terrain, you will encounter four distinct lakes: Deer, Summit, Diamond, and Luella, each set within its own natural basin. The trail offers continuous, sweeping vistas of the surrounding Trinity Alps, culminating in panoramic views from Siligo Peak where you might even spot Mount Shasta on a clear day.

Given its substantial distance and elevation gain, many hikers choose to complete this loop as a multi-day backpacking trip. If you plan to stay overnight, remember that self-issued permits are required, so make sure to secure one before you begin. Be aware that the higher elevations along the route can lead to a shorter access window later in the season, so plan your visit accordingly to avoid early snow or difficult conditions.

This loop is celebrated for its remarkable concentration of natural features and viewpoints, making it a standout experience in the region. The journey through the Trinity Alps reveals a rich tapestry of alpine ecosystems, from the serene lake shores to the rugged peaks. It is a prime example of the wilderness's raw beauty, offering a deep immersion into a pristine mountain environment.