California's mountains—from the Sierra Nevada to the Transverse Ranges—offer year-round outdoor recreation. Hiking trails traverse forests, meadows, and peaks for all levels. Camping ranges from developed campgrounds to remote backpacking. Fishing in alpine lakes and rivers yields trout, bass, and salmon. Boating on Lake Tahoe, Mammoth Lakes, and Shaver Lake includes kayaking, paddleboarding, and sailing. Rock climbing at Yosemite, Joshua Tree, and Bishop attracts global climbers. Mountain biking trails span beginner to expert. Horseback riding with guided tours explores wilderness trails. Winter sports at Squaw Valley, Mammoth Mountain, and Tahoe resorts offer skiing, snowboarding, and snowshoeing. Wildlife viewing reveals bears, deer, mountain lions, and birds. Scenic drives like Tioga Pass (Yosemite), Highway 395 (Eastern Sierra), and Pacific Coast Highway (Big Sur) showcase breathtaking vistas.