Tricks, Treats and Trails 2026 is LCRA Parks' annual Halloween family day at McKinney Roughs Nature Park in Cedar Creek, just outside Austin. Come in costume for a trick-or-treat trail, face painting, live music, a balloon artist, a juggler, a roaming magician, a petting zoo, rock climbing and a pumpkin jumping pad. McKinney Roughs is a wooded nature park along the Colorado River, so the spooky-fun vibe comes with fresh air and open trails.