In 2016, Hanna qualified once again for the World Cup finals in Gothenburg, Sweden, where she finished 15th. Later that year she competed at the 2016 Summer Olympics held in Rio de Janeiro, Brazil. She placed 9th in the team and 39th in the individual dressage competitions. At age of 61, she became the oldest Australian athlete ever to compete at the Olympics, surpassing a fellow equestrian and multiple medalist Bill Roycroft.