A Winnipeg police officer is about to climb a Himalayan mountain to raise money for a colleague's four-year-old girl, who is battling cancer for a second time.

When he's on duty, Const. Guy Leveille gathers forensic evidence to solve crimes for the Winnipeg Police Service.

Four-year-old Madelaine Wingfield (far left), with her family, is fighting her second battle with leukemia.
(CBC)

But outside of work, Leveille has been preparing to climb Mount Ama Dablam, a snow-capped peak  in eastern Nepal with an elevation of 6,800 metres.

He's making the 21-day trip to help raise money for the family of Const. Chris Wingfield, whose daughter Madelaine is battling a second bout of leukemia.

"I've got a small photograph of her that's going to be in my backpack on the way up, yeah," Leveille said. "I'll be thinking of her."

He has been collecting pledges in Madelaine's name through the Children's Wish Foundation, with the money destined to pay for the family to go to Disneyland.

So far, Leveille has raised about $4,000, a little less than half of what the family needs.

"I'm thinking that maybe it could be a little bit more of an immediate comfort for them, maybe just allowing them to get away for a week and be a family, do the normal family thing," Leveille said.

Wingfield thanks friend for 'really special' effort

Before Madelaine became ill, the family had planned to go to Disneyland. Her chemotherapy forced that trip to be postponed.

"When her name came up … I thought, 'Well, this is how it has to be. We have to do something for Chris and little Madelaine,'" Leveille said.

'We are trying to get over over that mountain of treatment and over this mountain of cancer. And to me, it draws a very very similar parallel with Guy trying to climb a mountain.'-Const. Chris Wingfield, whose daughter Madelaine has cancer

Wingfield said he's filled with gratitude for what his friend and colleague is trying to do.

"We are trying to get over over that mountain of treatment and over this mountain of cancer," he said.

"And to me, it draws a very very similar parallel with Guy trying to climb a mountain and get to the top of that mountain. So I wish him all the best in that endeavor. It's really, really special."