 Van Zyl akaita marathon yake yekutanga pa2012 London Marathon uye nguva yake ye2:33:41 yakamupa nzvimbo ye18 uye nzvimbo muSouth Africa timu ye2012 Summer Olympics muLondon. Zvisinei, akakundikana kupedza kumakwikwi eOlympic evakadzi emarathonpakudzoka kwake kuguta muna August. Van Zyl akatanga gore ra2013 nekukunda kanokwana kana mumakwikwi eSouth African half marathons. Akava wechi10 paLondon Marathon ya2013, achipedza nhangemutange yacho nenguva ya2:31:26 maawa. Akamhanyisa nguva yake yakanakisa ya2:28:40 pa2021 Xiamen Tuscany Camp Elite Marathon muSiena, Italy. 