Orchards Community Park is a great neighborhood park for a forested walk, with a combination of paved and dirt paths.  The main parking for the park is on NE 54th St.  There are a few spaces for parking on NE 58th St and some street parking on NE 102nd Ave.  I recommend parking on 54th.

Walking the perimeter trails of the park can take you just short of a mile.  You can criss cross through other trails for a longer walk.