Lillian Lake Access is reached via the Fernandez Trailhead, located 28. 5 miles up Beasore Road in Sierra National Forest, with a large parking area at the end of a 2-mile dirt road. The lake is 6.

19 miles from the trailhead and serves as a popular base camp for backpackers; wilderness permits are required year-round with trailhead quotas ($5 per person reservation fee), and the area is accessible June through October weather permitting.

No campfires are allowed above 10,000 feet, and no camping is permitted within 0. 25 miles of the lake outlet.