Chebii stepped up to the half marathon distance in 2011 and set a best of 61:40 minutes at the Nice Half Marathon.Ezekiel Kiptoo Chebii. IAAF. Retrieved on 2015-02-08. He also placed in the top eight at the Portugal Half Marathon and Giro di Castelbuono.Fernandes, António Manuel (2011-09-25). Keitany smashes race record in Lisbon. IAAF. Retrieved on 2015-02-08.Sampaolo, Diego (2011-07-27). Geoffrey Mutai dominates in Castelbuono. IAAF. Retrieved on 2015-02-08.
