The entrance to Yosemite National Park along Highway 140 in Mariposa County on April 23, 2024. (Photo: Paul Rogers, Bay Area News Group) Originally Published: May 2, 2025 at 5:16 PM PDT ...

If you show up at the park entrance without one, there is a high likelihood you’ll be turned around and denied entry, or forced to wait hours in line. Here’s what you need to know.