Tioga Road, also known as Big Oak Flat Road in its western sections, is a stunning east-west cross-Sierra Nevada highway within Yosemite National Park. This iconic route offers breathtaking views of granite peaks, subalpine meadows, and pristine lakes like Tenaya Lake. Typically open seasonally (late spring/early summer to fall), it's a winding drive with moderate grades and occasional curves; be prepared for potential delays due to traffic and construction.