10 to 12 miles. The Jacobsburg Environmental Center hike has been rescheduled for a different date. Instead, Mike will lead a hike in the Wissahickon. Depart G and R at 8:30 a.m. and enjoy a hike through the trails overlooking the Wissahickon Creek. Cost: $1.00. Leader: Mike Hughes, 267-784-5756, deecrismel@comcast.net