Kammala jumla mai zuwa: Johannes ya gudu a lokacin da ya cancanci (2: 37: 00) na 2: 33: 06 hours a Seoul International Marathon a watan Maris 2008, ya cancanci ta zuwa gasar Olympics ta 2008. A gasar tseren marathon ta Olympics ta sanya ta arba'in a cikin martaba. Ta sake wakiltar kasarta a fagen duniya a Gasar Cin Kofin Duniya ta 2009, amma ta gama ta 56 a cikin jinkirin lokaci na awa 2:50:19. Ta sake dawowa a Gasar Marathon ta Dublin, inda ta zama ta biyu. A shekara mai zuwa tana da daya daga cikin ayyukanta mafi kyau na kasa da kasa, yana zuwa na 16 a gasar
2010 IAAF Gasar Rabin Marathon ta Duniya.