Springwater Corridor Professional Review and Guide
"The Springwater Corridor is the major southeast section of a system of nature trails encircling Portland. Ride, walk, or skate the trail to enjoy parks, botanical gardens, and wetlands—not to mention herons, coyotes, and deer—as you travel through industrial, suburban, and rural areas.
August is blackberry month; don’t hesitate to savor your way down the trail. Surface: Mostly asphalt, although 3 miles from Gresham to Boring are dirt. Location: Portland to Boring, in Multnomah and Clackamas Counties."