[3] After finishing his studies at Muhammadiyah 1 Senior High School in Temanggung in 2004, he moved to the Doctor Suharto Rehabilitation Centre in Surakarta.

[3] Hartanto received his first medal, a silver at the National Athletics Competition for the Disabled (Pekan Olahraga Cacat Nasional), in 2004.

In December 2005 he won a gold at the third ASEAN Para Games in Manila, with a jump distance of 6.4 metres (21 ft).

[5] In June 2012 he began training to represent Indonesia at the 2012 Summer Paralympics in London, together with two other athletics competitors, a powerlifter, a swimmer, and a table tennis player.

[6] As of 16 July 2012[update] Hartanto was one of four Indonesian athletes at the 2012 Paralympic games, along with Ni Nengah Widiasih (powerlifting), David Jacobs (table tennis), and Agus Ngaimin (swimming).