From CNBC:



In 2024, the National Park Service is offering free admission to U.S. national parks on six specific days. However, some of the most popular national parks, such as the Grand Canyon, Zion, Rocky Mountain, Acadia, Yosemite, Yellowstone, Joshua Tree, and Glacier, do not offer free entrance. The typical entrance fee for these parks ranges from $20 to $35 per vehicle. It may be more financially beneficial to purchase an $80 annual pass if planning to visit multiple parks in one trip. Visitation to national parks has been on the rise, possibly due to the pandemic and closed international borders. Many parks may also require separate reservations to enter, which can include additional fees. In light of these factors, it is recommended to plan and budget carefully when visiting national parks in 2024.



Original: Here’s when you can visit a national park for free in 2024