Schoolgirl Ng Hei-man did it again, enhancing her reputation as the best junior road runner in Hong Kong when she clinched the 10km honours in Sunday's Standard Chartered Marathon. Hei-man, a 14-year-old student at Good Hope School, finished in 40.29 minutes, ahead of Tania Mak So-ning (41.39), and Joyce Cheung Ting-yan (41.54). Hei-man holds the Hong Kong junior record for this distance - 37.41 - set in the Nike Hong Kong 10km Challenge last year. But wintry conditions, and the gruelling, undulating course, which sent runners through the Western Harbour Tunnel and over the flyovers leading to Wan Chai from Sheung Wan, meant none of the top juniors were able to get anywhere near their personal best times. Ricco Chan Ye-ko won the boys' race in a time of 36 minutes, well short of his best at this distance - 34 minutes, 25 seconds - achieved in the Nike 10K last year. Despite the slow time, the La Salle College boy was too good for his rivals. Yung Chun-nam, of YCH Tung Chi Ying Memorial Secondary School, was second in 36.34, and Ricco's fellow triathlon team member, Ivan Lo Ching-hin, was third in 37.08. The fastest finisher overall (Men's Open) in the 10k race was Boonchoo Jandacha, a police officer from Thailand who won in 33.44. Hong Kong's Leung Ying-suet won the Women's Open category in a time of 40.48. In the half-marathon (21.1km), Winter Tsui clinched the boys' junior prize, finishing in 1 hour 16.45 minutes. Puk Wing-hang (1:19.31) and Yeung Yat-heung (1:19.32) were second and third, respectively. Mok Chi-ling won the girls' race in 1 hour 40 minutes ahead of Li Mei-yi (1:40.34) and Ling Yim-ting (1:42.51). Shimomur Satoru of Japan won the half-marathon overall in 1 hour, 8.04 minutes. Kenyan Samson Lowapet won the full marathon in 2:15.21 minutes. Chinese runner Dai Yan Yan won the women's marathon, finishing with a time of 2:34.41.