The cold didn't stop 16 year-old Scott Duffy from shaving off 14 seconds from last year's record, set by Bathurst's Wes Gibson.

Scott Duffy ran the 9km Wedgetail Challenge in 39 minutes and 13 seconds after last year winning the 5km Wallaby Run.

"I just love to run," he said. "It's addictive."

The Dubbo local is coached in Sydney where he goes to school, and wants to pursue a career as a runner, as well as coach others.

Now he has his sights set on the state cross country. He also won the Dubbo Park Run on Saturday.

Queen of the Mountain was Meg Reeves who managed a time of 44.20.

Local Maggie Smith defended her title as female junior champion with a time of 54.56, taking about six minutes off her previous record despite the rough conditions.

The 5km Wallaby Run saw another win for Wellington with Lucy Edwards the first to finish with a time of 22.23. 

The local 16-year-old goes to Kincoppal-Rose Bay School of the Sacred Heart in Sydney. Back for the Mount Arthur Challenge, her proud mother watched her beat last year's record by six minutes. 

Winner of the 50km Limestone Ride was Michael Ticehurst with a time of 1.21.41. Tim Hines came second with the same time while open male champion Christopher Couper was one second behind.

Committee member Erica Baigent described the contestants as dedicated, many travelling a great distance to be there.

"Last year it was beautiful weather, but we've had bigger interest this time," she said.