Dewey Point is a stunning viewpoint that can be accessed off of Glacier Point Road in Yosemite National Park.
This approximately 5-mile out-and-back trail is a great hike in Yosemite National Park. This trail starts off of Dewey Point's Meadow Trail, but you can also start from the Dewey Point Ridge trail, which you'll pass first when coming up Glacier Point Road. This trail is not dog friendly, but is accessible year-round, but will start from the Badger Pass ski area in the winter.