The Columbia Springs Water Resources Education Center and Trout Hatchery has over a mile of trails to wander around and lots of great educational resources. The public parking lot is just to the west of the Trout Hatchery.
From the parking lot, you can take a short loop trail (1/3 mile) past the Nature Play Area, or follow the path alongside Evergreen Highway to the Cedar Loop trail. East from the parking lot is the Trout Hatchery as well as trails around West Biddle Lake and to East Biddle Lake. To walk all of the trails, out and back, would take you just under 2 miles.