There are ten different days in the coming year that will be free of charge for guests to U.S. National Parks. Out of the 400 sites in the country, 137 regularly charge for admission.
This year those fees will be waived for the following days:
Monday, January 16 for Martin Luther King Jr. Day
Monday, February 20 for Presidents Day
April 15 to 16 and 22 to 23 for the weekends of National Park Week
Friday, August 25 for National Park Service Birthday
Saturday, September 30 for National Public Lands Day
November 11 to 12 for Veterans Day Weekend
It’s also possible to purchase an annual pass for $80 to avoid paying individual entrance fees at any time of the year.