 Ramba uchinyora ndima iyi - Hartman akamiririra nyika yake paMakwikwi Enyika Ekumhanya Ekumhanya Kwevakadzi mana uye Makwikwi Ekumhanya Ekumhanya Ekumhanya Epasirese matatu. PaWorld Sprint Championships akakwikwidza muna 2003 kupedza 22nd overall, 2008 kupedza 9th overall, 2009 kupedza 21st overall uye 2010kupedza 22nd zvachose. Pa2008 World Single Distance Speed Skating Championships akakwikwidza mumakwikwi emamita mazana mashanu 18th pa2009 World Single Distance Speed Skating Championships akakwikwidza mumakwikwi emamita mazana mashanu 19th uye 1000 metres chiitiko 18th; uye pa2012 World Single Distance Speed Skating Championships akakwikwidza mumakwikwi emamita chiuru 22nd. Akakwikwidzawo kumakwikwi epasirese, kusanganisira ISU Speed Skating World Cups. 