Join us on this 9 mile Patapsco Valley State Park hike in Baltimore County. This modified out-and-back hike has a handful of stream crossings, some sections of rocky terrain, some sections of trail that may be muddy, a variety of landscapes and river views, and modest elevation gain of less than 100 feet per mile. Our pace while hiking will average 2.5 - 2.8 mph [24 - 21.4 minutes per mile], and there will be a 15 minute snack break.