Ninja Warrior Competition happens February 23 at the Greenville Convention Center in Greenville, SC. Competition is open to the public for kids ages 6 and up. Registration opens late August. $35 Preregistration deadline is by January 10th. Onsite registration is $50 per athlete. Participants receive commemorative T-shirt and a custom Ninja Warrior medal. Top finishers win placement medals, free ninja classes and a grand prize of one free week of summer camp at Ninjafest in Crossville, Tennessee! Obstacle course and competition is age group specific.