Trip report
May 22, 2024 — Bertha Peak is a minor summit on the north shore of Big Bear Lake, most commonly accessed via the Cougar Crest Trail. This is a popular hike with views toward the lake for much of the ascent. You could start from Polique Canyon Road from the west instead and just follow the Pacific Crest Trail to save a bunch of miles to reach the summit, but the trail is enjoyable and worth the effort.
The Cougar Crest Trail begins paved for a short time before turning into well-packed singletrack. It ascends through a drainage and up onto a slope, where views of Bertha Peak become visible. The trail then switchbacks at a pleasant grade as it slowly makes its way north, views toward Big Bear Lake throughout. The trail eventually meets with the western ridge of Bertha Peak and joins the Pacific Crest Trail for a short time. An access road leaves the trail and climbs steeply up to Bertha Peak and its summit radio towers. Delamar Mountain is clearly visible to the west.