(DC) (National Park Service) Lace up your hiking boots and follow in the footsteps of Theodore Roosevelt, the adventurous president who believed that time spent in nature built character, courage, and a stronger nation. Beginning at Peirce Mill, this 1.5-mile (round-trip) guided hike winds through scenic trails and rugged landscapes that Roosevelt explored while escaping the pressures of the presidency.    Children must be accompanied by an ...