"The field is very strong. It is the toughest that I have competed ever. But I have trained hard and I will look to better my personal best here," Kipyego told reporters here today.
The Delhi Half Marathon will witness the best-ever elite field, which will include four men and women currently in top 10 of 2013 rankings.
"I don't think about the competition, there is no fear, I want to improve and I want to clock sub 60 on Sunday. I am just four seconds shy of the mark," said Kipyego, who has a personal best of 60.04 which he recorded at 2013 Philadelphia Half Marathon.
His compatriot Kenya's Geoffrey Kipsang, who has the fastest time of the year to his credit, is also in the field.
Ranked number one in IAAF top lists after turning in his personal best of 58:54 in Ras Al Khaimah (RAK) Half Marathon this year, Kipsang is rearing to go on Sunday.
"I was here in 2011, I was second. But I am here again and I want to do well this time. I have been preparing hard and hope good things happen on Sunday," said the former world junior cross country champion, who is also the star of a movie called "The Unknown Runner".