Knoxville Dollars for Scholars is hosting the 3rd Annual Knoxville Nationals 1/3 Marathon and Sterling Physical Therapy 4K, being held Saturday and presented by the Pella Rolscreen Foundation. Dollars for Scholars Board member Joe Cunningham says all proceeds from the races will go towards scholarships for local graduates, and to sign up visit khsdfs.org or call 828-8373 for more information.