A 21-mile paved rail-trail that runs from the east bank of the Willamette out to Boring, and the stretch that matters most cuts right through Oaks Bottom, Portland's first designated urban wildlife refuge. Bike or walk it and you'll pass beavers, river otters, herons, and the giant painted mural on
Try: Biking the Springwater from the waterfront through Oaks Bottom to the Sellwood bluff