Climbing Etna Summit northwards on is a seriously steep but rewarding ascent into the remote Klamath Mountains. Prepare for a tough climb of approximately 7-8 miles while gaining around 3,000ft to reach the ~6,070ft summit where the Pacific Crest Trail crosses. You'll face a significant challenge: the average gradient is a demanding 8.2%, with the second half being particularly relentless, featuring sustained double-digit grades, including a mile averaging 12% and ramps hitting 15% or more. You'll be climbing through quiet, beautiful forests, with views opening up near the summit.