Hiking trails have donation boxes at trailheads.
Serenity and Flying V trails are geo-referenced. Click below for the PDF version of trail map, then download into an app (such as Google Play Store's "PDF Maps"). You can then use the app for GPS location to show where you are while on the trail and to track your distance.
Ali Hyatt has recently started a Newcastle chapter of "Hike It Baby". For more information, check out her Facebook group page at: https://www.facebook.com/groups/hikeitbabynewcastle/
I also have printed trail maps in my office, feel free to stop by and pick one up!