The Delaware River Sojourn is an annual event to heighten awareness of, and appreciation for the ecological, historical, recreational, and economic significance of the Delaware River and its tributaries, which flow through New York, New Jersey, Pennsylvania, and Delaware. The Sojourn combines canoeing and kayaking, camping, educational programs, historical interpretation, and more. The theme for 2016 was "Celebrating 100 Years of the National Park Service." The Delaware is the longest free-flowing River east of the Mississippi, a treasure to be preserved and protected. Two National Parks cover portions of the Delaware paddled in 2016. The Upper Delaware Scenic and Recreational River and The Delaware Water Gap National Recreation Area. Below is a collection of pictures from the 2016 Sojourn, June 18-25. The 2016 Sojourn started at Skinner's Falls, one of the few class two rapids on the River. It ended in a tidewater section of the River at Pennsbury Manor, Pennsylvania.