Join us on this 8 mile Patapsco Valley State Park hike in Baltimore County. The hike has a couple of interesting stream crossings, many sections of very rocky terrain, some striking aerial views of the river, views of I-70 from below and above, about 800 feet of climbing, and varied landscapes -- from suburban housing to open fields to thick forest. Our pace while hiking will be 2.5 - 2.8 mph (24 - 21.4 minutes per mile). There will be…