Canaan Valley National Wildlife Refuge Trails Roads . Freeland Boardwalk Trail . mile, including loop Easy.Nice views of Canaan Valley abound on this short accessible boardwalk leading through a wet field, shrubland, and past a beaver pond and bubbling spring..Blackwater River Trail Canaan Valley Hiking Trails. This is the smallest loop as well as the prettiest trail of all of Canaan Valley’s hiking trails. Getting to it is simple too! Follow the park’s main driveway all the way to the golf course and park at the end of their parking lot..