It was a day for the history books for ultra-running in Hong Kong on Saturday as two elite runners broke the 10-hour barrier in the Vibram Hong Kong 100 over the notoriously hilly terrain. China's Yan Longfei ran aggressively to finish in nine hours, 52 minutes and 42 seconds. Yan, 26, a professional trail runner who switched from road running two years ago, sliced more than two minutes off the course record set in 2012 by South African star Ryan Sandes. Norway's Sondre Amdahl followed in 9:59:46. Sandes, Yan and Amdahl are the only runners in the five-year history of the 100km race to finish under 10 hours. Rounding out the top three was France's Antoine Guillon in 10:30:01. The first Hong Kong-based runner home, in eighth place, was Santosh Tamang, a 23-year-old Nepali. Stone Tsang Siu-keung was ninth. Hong Kong's Wyan Chow Pui-yan's evenly paced run saw her win the women's race in 12:25:11, having overtaken mainlander and eventual runner-up Dong Li after about 65km. "I really didn't have any expectations coming into the race as I was sick with a fever last week," said Chow, 37, who last year became the first woman to complete the Oxfam Trailwalker in a mixed team in under 13 hours. "When I caught Dong Li at Gilwell campsite I knew that this time I would be champion. "I didn't slow down and just tried for my personal best. I feel like I'm still dreaming." Dong finished in 12:39:54 followed by Italian Lisa Borzani in 12:50:38. Last year's winner, Italian Francesca Canepa, dropped out at 28km after battling a cold all week. Course-record holder Claire Price also pulled out, at the halfway mark, having been unable to fully recover from her win in The North Face 100 only a few weeks ago. More than 1,800 runners took part in the race, which runs from the eastern beaches in Sai Kung to Tai Mo Shan, covering 4,500 metres of hills along the way. Testament to the race's growing international reputation as part of the prestigious Ultra Trail World Tour, 50 countries were represented in the starter's list and the top 10 men and women hailed from 12 countries, including Spain, Australia, Japan, Nepal, Britain, Italy, New Zealand, Canada and Hong Kong.