Cika wannan jumla:
2004 IAAF World Half Marathon Championships, Adanech ya gama 16th tare da lokacin 1:13:50, a lokacin da ya fi kyau. Bayan ta mai da hankali kan mita 10,000 da rabin marathon a farkon aikinta, ta koma cikakken marathon a 2005. Ta gudu a cikin Reims à Toutes Jambes kuma ta ci nasara a 2005 tare da lokacin 2: 35:55. A shekara ta 2006, ta bi wannan tare da kammala na takwas a 2006 Berlin Marathon tare da lokacin 2:36:48 da kuma na uku a 2006 Rome Marathon tare da lokacin 2:27:38. Adanech ta lashe Rock 'n' Roll Arizona Marathon sau biyu; a 2007, ta yi nasara da lokacin 2:31:43, kuma a shekara mai zuwa ta yi nasara da lokacin 2:31:14, ta karya rikodin hanya a cikin tsari. Babban tserenta na ƙarshe shine 2008 Rotterdam Marathon; ta gama ta biyu tare da mafi kyawun lokacin mutum na 2: 27.32.