The Pennsylvania Parks and Forests Foundation has invited Pennsylvanians to join PPFF's fifth Great Pennsylvania Outdoor Challenge.

"All you need is a Pennsylvania State Parks and State Forests Passport, which is the key to some of our challenges and the prizes," PPFF President Marci Mowery said.

Pennsylvanians can sign up for the Passport and register for the challenge at PaParksAndForests.org. There is a small cost for the Passport.

Participants set their own goals for the challenge, whether they want to seek adventure, better fitness, healthier eating and learning or just enjoy the outdoors. They might walk, bike, run, picnic, read or visit a park or forest where they have never been before.

The challenge is May through October 2013.

For more information, visit website at www.paparksandforests.org or call 717-236-7644.