Nyorai mberi kweiyi ndima - Chepkorir akazvisimbisa pakati pevatambi vepamusoro vehafu yemarathon munyika nekukunda kuBerlin Half Marathon munaKurume 2010, achimhanya nguva yake yakanakisa yemaminetsi makumi matanhatu nemapfumbamwe nemakumi mana nematatu kukunda Eunice Kales. Akadzokera kuguta reGerman kunomhanya muBIG 25 Berlin, uye akaiswa wechitatu. Akasarudzwa kukwikwidza kuKenya ku2010 IAAF World Half Marathon Championships
asi kukuvara kwakaderedza mwaka wake asati agona kuita mutambo wake wepasi rose wevakuru ikoko.