Normally, 127 of America's 409 national parks charge an entrance fee that ranges from $3 to $30. Colorado has 13 National Parks, eight of which normally charge an entrance fee. The waiver does not cover amenity or user fees for things like camping, boat launches, transportation, or special tours.
In addition, any fourth grade student can get a free annual pass through the Every Kid in a Park program, and active duty military and citizens with a permanent disability can also get free passes.
Several other federal land management agencies offer fee-free days as well.
- U.S. Fish & Wildlife Service - Of the 563 public national wildlife refuges, only a few normally charge a fee. All will be free on January 18, February 13-15, September 24, October 9, and November 11-13.
- Bureau of Land Management - The BLM will waive fees for visitors to the National System of Public Lands on January 18, February 13-15, September 24, and November 11.
- U.S. Forest Service - Fees are waived at most of its day-use recreation sites on January 18, February 15, June 11, September 24, and November 11.