There are five days in total, during which all of the country’s 418 national parks can be visited at no cost. The waiver only applies to entry fees, and not to other associated park or activity fees such as camping, boating, transportation, or tours. Here are the five entry-free days for 2019:
January 21st, 2019 (Martin Luther King Jr. Day)
April 20th, 2019 (the first day of National Park Week)
August 25th, 2019 (the National Park Service’s birthday)
September 28th, 2019 (National Public Lands Day)
November 11th, 2019 (Veterans Day)
It’s worth noting that admission to most national parks is free all year round — only 115 parks charge entrance fees, including Grand Canyon National Park, Joshua Tree National Park, and Hawaii Volcanoes National Park. You can also buy the America the Beautiful Pass for $80, which provides unlimited entrance to over 2,000 federal recreation areas.