Ethiopian runner Guye Adola emerged the winner in the international elite men's category, while Kenyan Florence Kiplagat won the women's event of the Airtel Delhi Half Marathon that was held here on Sunday.
Adola created a course record by clocking 59.06 minutes. He broke the record set by country man Atsedu Tsegay last year.
He edged past 2014 World Half Marathon champion Geoffrey Kamworor, who finished with a timing of 59.07 minutes.
Mosinet Geremew of Ethiopia was third with a timing of 59:11 minutes.
In the International Elite Women category, defending champion Florence Kiplagat of Kenya won with a timing of 01:10:04 beating compatriot Gladys Cherono (01:10:05).
Ethiopian runner Worknesh Degefa finished third with a timing of 01:10:07.
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"The competition was very stiff due to the early morning cold of Delhi. I am very happy to have overcome it," Adola said.
In the women's category, reigning World Half Marathon champion Gladys Cherono was stunned by two-time world champion Kiplagat.
India's Suresh Kumar and Preeja Sreedharan also emerged victorious in the Delhi Half Marathon.
Suresh completed the 21.1 km race in an hour and 04.38 minutes while second placed Nitender Singh Rawat and third placed Kheta Ram were slower by 16 and 18 seconds, respectively.
In the women's category, Preeja retained her title with a timing of an hour and 19.03 minutes while Monika Athare and Sudha Singh took second and third positions, respectively.
Monika finished the race in an hour and 19.12 minutes, which was nine seconds faster than London Olympian Sudha's effort.