 Ramba uchinyora ndima iyi - Kim akatanga kumhanya marathon muna 2011, achimhanya muMacau Marathon uye achipedza ari wechigumi nenguva ya2:38:36 maawa. Kumhanya kwake pa2012 Pyongyang Marathon kwakamuunza padanho repamusoro, sezvo akahwina mujaho nehuwandu hwevanhu 2:30:41 maawa. Kumhanya uku kwakamupa nzvimbo muchikwata cheNorth Korea cheMitambo yeOlympic ya2012, kwaakaisa 74th yakazara muvakadzi veOlympic marathon. Kudzokera kuPyongyang muna 2013 akaona kusimuka kwake kumusoro kwechikwata chenyika nekukunda kwechipiri munhangemutange nenguva ye2:26:32, achimuisa pachinzvimbo chechitatu pane zvinyorwa zveNorth Korea zvenguva dzese. 