Kammala jumla mai zuwa: Matsayinta a tawagar tseren tseren kasar Kenya ta duniya ba ta da tabbas a shekarar 2009 yayin da babban kocin Julius Kirwa ya yi watsi da damarta, yana mai cewa ta yi tsere da yawa a wannan kakar. Cherono ya amsa ta hanyar jagorantar kai tsaye a Gwajin Kenya kuma ya lashe tseren matasa da tazarar dakika goma sha uku. A cikin
Gasar tseren tsere ta duniya ta 2009 a Amman, Cherono ya shiga cikin tseren tsere mai tsayi tare da Genzebe Dibaba a tseren matasa. Cherono ta jagoranci a matakai na karshe amma wani yanki mai wahala tare da hawa na mita 40 ya ba Dibaba damar wuce ta kuma Cherono ya ƙare da lambar azurfa. A gasar zakarun Afirka ta matasa ta 2009, Cherono ta sauƙaƙa zuwa taken mita 3000 da kimanin dakika 13 amma ta sake samun nasarar doke ta Genzebe Dibaba a tseren mita 5000, inda ta kammala da lambar azurfa. Ta yi gasa a kan babban zagaye na waƙa a wannan shekarar kuma ta kasance ta uku a Rieti IAAF Grand Prix, tana yin rikodin mafi kyau na 8:44.67 na 3000 m. Ta ɗauki na uku a karo na biyu a Memorial van Damme a watan Satumba, ta yi rikodin mafi kyawun mutum a cikin mita 1500 da mita 2000 kuma an doke shi ne kawai ta hanyar zakarun duniya Gelete Burka da Vivian Cheruiyot.