Leavenworth has done a nice job with these trails. Complete with a playground, benches, children-only fishing pond, historical markers, nature markers, riverside views..from the parking lot, you take the main trail along the river which soon crosses a bridge onto Blackbird Island. You have three choices of trails to cross the island, which merge on the other side into another bridge, which takes you to another nice riverside section. The trail ends at a golf course. It was not crowded at all. Great views of the river. Less than 2 miles roundtrip I would guess.