Whakaotihia te rerenga e whai ake nei: I ahu mai ia i te papamuri hakinakina, na te mea i whakataetae tana whaea a Julia del Río mo Chile i te IAAF World Cross Country Championships. I tiimata ia ki te whakangungu i te rere tawhiti me tona whaea hei kaiwhakaako mai i te tamarikitanga. I tiimata a Díaz i tana whakataetae a-ao i te 2008 South American Youth Championships i Athletics, i reira ia te tuaiwa. I tohu ia i tona whenua i te taumata o te ao i te tau i muri mai, i te rere i roto i te wera i te 2009 World Youth Championships i Athletics. I hoki mai ia ki te taumata whenua i te 2010 South American Youth Championships i roto i te Athletics me tana angitu tuatahi, i te 1500 mita koura i runga i te papa whenua i Santiago de Chile. Ko tetahi atu mētara taumata rangatahi i tae mai i te 2010 South American Cross Country Championships, i reira ko tana wha o nga waahi i arahi ai a Chile ki nga mētara parahi a te roopu. I tīmata ia ki te mahi i te ahunga whakamua i roto i te kāwai o raro i te 20 i te
2011 South American Junior Championships in Athletics, i tango i te parahi hei toa 1500 m taiohi me te tuawha i te 800 m.