Rubuta ci gaba don wannan sakin layi - John Mwathiwa yana da shekaru 29 a lokacin wasannin Olympics, kuma yana yin nasa na uku a jere, kuma na karshe, wasan Olympics. A ranar 4 ga watan Agusta, ya shiga cikin Marathon
, tseren da aka gudanar ba tare da zagaye ko zafi ba. Ya gama tseren a cikin sa'o'i 2, da minti 24, da dakika 45, wanda ya sa ya zama na 65 a tsakanin 'yan wasa 111 da suka gama tseren. An lashe lambar zinare a cikin awanni 2, mintuna 12 da dakika 36 da Josia Thugwane ta Afirka ta Kudu, ta azurfa ta dan tseren Koriya ta Kudu Lee Bong-ju, kuma tagulla ta lashe ta Kenyan Erick Wainaina.