Kellys Run Nature Preserve is a 3.8 mile loop hike in Holtwood, PA. We decided to visit Pinnacles Overlook first and then hike down to Kellys Run, making it a 5.5 mile round trip hike. There is a small parking area at Pinnacles Overlook and it fills up, so I would suggest arriving early. FromContinue reading “Kellys Run Nature Preserve Hike”