While many city-dwellers are setting their sights on the opening of the long-awaited 606 trail, there’s another multi-use trail that spans 28 miles, and it’s opening this weekend too. The Calumet-Sag Trail (dubbed the Cal-Sag Trail) has been a work in progress for south-suburban hikers and bikers for over a year and will mark its official opening with a celebration Saturday. The route connects 14 communities throughout Chicago’s southland and provides access to several forest preserves and natural areas. Steve Buchtel joins us from the trail, at Lake Katherine in Palos Heights. (Millenium Reserve)