Lots of pictures from last time here: http://www.meetup.com/phillyhikes/events/58023282/
(of course it was Spring, but you can get the idea.) I also posted a pic I took yesterday (12/23/12) in the comments below. There have been some new (asphalt) recreational trails installed along our route, but we will use a mix of different trails (including dirt trails in the woods) going and returning.
The Tacony Creek watershed drains 1/8 of the city's stormwater, and Tacony Creek Park, situated as it is about halfway between the northeastern and southwestern borders of the city, offers some unique juxtapositions of the natural and man-made. There will be a little bit of overlap (at the beginning, and perhaps at the end), of this hike: http://www.meetup.com/phillyhikes/events/16376090/ , but we will mostly be exploring downstream. Our long break/turnaround will be in Juniata Park, which will take us a little over an hour to get to, and a little over an hour to return from. Plan on about 2 hours and fifteen minutes of walking time, and about 45 minutes of break time. Please no absolute beginners on this one. Since the plan involves a certain amount of negotiating holes in fences and the like, please also think twice about bringing your kids or your dog. (Participation is always at your own risk, but I won't be asking you to do anything I haven't already done, often while carrying my bike.) There are some restaurant options on Tabor road for enjoying a meal together afterward: one possibility is "Taste of Portugal," but we really enjoyed the nearby Italian place we went last time.
We will meet at the Olney Regional Rail station (on the Fox Chase Line), about a 15-minute/1-mile walk from the "middle" of Tacony Creek Park. The train arrives from Center City at 11:35am http://www.septa.org/schedules/future/rail/pdf/fxc.pdf ; we will get started shortly thereafter. (Please note, this is not to be confused with the Olney station of the Broad Street "Orange" Line, another mile-plus distant.)