More than 150 gymnasts will compete April 17 and 18 in the Rhythmic Gymnastics State Championships at the Hammond Park Gymnastics Center, 705 Hammond Drive. Events include rope, hoop, ball, clubs and ribbon. Athletes from Florida, South Carolina and North Carolina also will participate but not compete. Competitions will begin at 5 p.m. on April 17 and at 9 a.m. on April 18. Admission is $5 for those 12 and older. For more information, contact Marina Davidovich at marina.davidovich@sandyspringsga.org or call (404) 705-9742.