Kingsport Parks And Recreation Is Offering A Four-Week Bike Safety And Fundamentals Program Called Treadz. The Class Will Run Thursdays From January 9 Through January 30, From 6 To 7 P.M. At The Kingsport Farmers Market. Open To Kids Ages 2 To 12, The Program Costs $15 Per Child, And Participants Must Bring Their Own Bikes And Helmets.