Obviously not all of these parks are camping parks, but any day outside is a good day.

Cut and pasted from the news site ...
"National park entrance fees will be waived 17 of the following days next year.

January 14-16 (Martin Luther King Jr. weekend); April 21-29 (National Park Week); June 9 (Get Outdoors Day); Sept. 29 (National Public Lands Day) and Nov. 10-12 (Veterans Day weekend).

There are still a few free days left for 2011 as well. All of the national parks will once again allow entry to travelers without paying on Veterans Day weekend, which is Nov. 10-12."

Here is the whole article ...


Link for the specific parks ...


Hope this helps someone get some fresh air.