Map of Silvis Trail, Jefferson County, Pennsylvania LOCATION Latitude: 41.31611 Longitude: -79.05278 Current weather conditions and forecast for Silvis Trail, Jefferson County, Pennsylvania Local climate location: WARREN 10 miles away    High quality water resistant topo map of Silvis Trail, Jefferson County, Pennsylvania.   Pennsylvania Hiking Trails Complete list of all hiking trails in Pennsylvania sorted by county. Books about Silvis Trail, Jefferson County, Pennsylvania List of books available on Amazon.com about Silvis Trail. Outdoors Recreation Near St. Marys, Pennsylvania Outdoors recreation in the vicinity of St. Marys, Pennsylvania, the metro area neareast to Silvis Trail. Find info on campgrounds, marinas, hiking trails, ski resorts, lakes, beaches, parks, whitewater, golf courses and more. Pennsylvania Outdoors Index Index of outdoors activities in the great state of Pennsylvania.