Biking: Biking around Lake Tahoe and the Sierra Nevada is for cyclists who don’t shy away from climbing. Tahoe has its share of traffic, but other areas are lightly trafficked. Routes of 30-60 miles with 2,000-6,000 feet of climbing or more per day are possible. Yosemite doesn’t permit guided biking, but you can pedal around on your own along the bike paths on the valley floor to appreciate the area from a different perspective than most visitors to Yosemite get to have.
Hikes: Epic. Hikes in Yosemite and Tahoe are for all abilities from 2 miles flat valley floor hikes to 5 miles wanders through redwoods to 8-12 mile challenges with several thousand feet of elevation gain to the mountains above the valley floor or brilliant blue waters of Lake Tahoe
Kayaking/Rafting: Whitewater rafting the American River, a gentle float down the Merced River in the Yosemite Valley is a great way to cool off and soak in the iconic views.
Misc: Exploring the gold mining history of the region.