Join us on this 12 mile Patapsco Valley State Park hike in Baltimore County. The hike has several minor stream crossings, some sections of rocky terrain, some sections that may be muddy, less than 100 feet of elevation gain per mile, multiple tributary and river views, and a 20 minute lunch break. Our pace while hiking will average 2.5 - 3 mph (24 - 20 minutes per mile).