Campers from throughout North America are making their reservations for Kampgrounds of America’s 9th Annual “Come Kamp & Care With Us Weekend” event on May 11-12.

According to a press release, campers who stay as paying guests on May 11 will receive a free night of camping on Saturday at any of the 400-plus participating KOA campgrounds throughout the North American KOA system.

The event, which attracted more than 25,000 camping families in 2011, also serves as a fundraiser to support KOA Care Camps for children with cancer. KOA Care Camps is a network of 44 specialized summer campers throughout North America that provide a safe summer camping experience for children undergoing or recovering treatment for cancer.

“Come Kamp & Care With Us Weekend has become a mainstay in our efforts to support this very worthy charity,” said KOA CEO Jim Rogers. “It is so great that we have found a wonderful way to invite out campers to begin enjoying their summer camping season and also allow them to help us support camps for children with cancer.”

Last year, more than $500,000 was raised through camper donations by the KOA Care Camps Trust and distributed to the various KOA Care Camps. The funds are used to provide the summer camps to children with cancer at absolutely no charge to their families.

Participating KOAs are already planning fun events to make the weekend of May 11-12 special. For a complete list of participating KOAs, go to http://koa.com/come-camp-with-us/