 His personal best throw is 80.63 metres, achieved in April 2005 in Durban.This is the former African record, being beaten in 2014 by Mostafa Al-Gamel from Egypt.On 22 April 2017, Harmse gained his twenty-second consecutive national hammer throw title at the South Africa Senior Track and Field Championships - Potchefstroom – a record unmatched by any athlete at the country's national championships.