He won the Chicago Marathon held on October 7, 2007, with a time of 2:11:11 hours.[7] The race was the closest Chicago Marathon ever and a photo finish culmination of a shoulder to shoulder final 300 meter stretch run with Jaouad Gharib down Columbus Drive on a day of record-setting 88 °F (31 °C) temperatures.[8][9]
He could not defend Chicago marathon title in 2008 due to injury. In December 2008 Ivuti won the Honolulu Marathon.[10] In May 2009 he won the Prague Marathon and set a new race record. He also repeated the Honolulu Marathon victory. He had a disappointing run in Prague in 2010, coming nineteenth,[11] but he rebounded at the 2011 Vienna City Marathon by recording his third career sub-2:10 time to take second place behind John Kiprotich.[12] He returned to Honolulu but was beaten to the title by Nicholas Chelimo by a margin of three seconds.[13]
Ivuti is married and his wife Marietta is sister of Jimmy Muindi, also a Kenyan marathon runner.[14]