I hiked this trail in June 2015. Was there on a Friday morning and encountered a total of four people while I was out. Mostly easy walk through the woods; I made it more challenging by turning around at the bottom of that long hill and going up it again. Very peaceful, bordering on eerie.
I live just 6 miles from Nolde Forest and hike there regularly. In addition to the well marked trails they offer a handy fold-able map/brochure (it's at the mansion/office and the Sawmill kiosk) that makes it easy to plan a variety of hikes where you can choose the difficulty level and the distance by combining the many different trails. The entire park is a beautiful environmental, education center where an abundance of seasonal plants and flowers grow - simply enchanting!