Bike trails are being developed for the new 75-acre Knoxville Hastie Park, IMBA crew visit May 23-24, 2008, register at ambc-sorba.org. An old road bed runs 0.76 miles between Margaret Rd and Post Oak Lane. Another 1.2 miles of single-track have been flagged, and there are other existing trails.
See google trail map Margaret Road entrance.