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.