Patapsco Trail Day - Fun Series!

Every year there are a series of trail days in the Patapsco Valley in many different parts of the park. They call this the Patapsco Fun Series. They do no limit registration, and the location of each one changes, so you need to pay attention the Friends of Patapsco Facebook page for more info than just the date. Here's a link:
https://www.facebook.com/FriendsPVSP