Sergeant Adrian Reynolds stepped up to the challenge of playing 72 holes of golf in one day, in memory of his father who died from cancer and a colleague currently fighting his own battle.

For those unfamiliar with the Cancer Council initiative, The Longest Day is the ultimate golf challenge designed for passionate golfers to test their skill, strength and stamina as they look to complete four rounds from dawn to dusk.

As Sergeant Reynolds walked 30 kilometres around Wagga Country Club's golf course, he look back on the toll cancer could have on those diagnosed.

"It was actually surprising to see how different (my dad) looked and how much it destroyed his body in the last 12 months ... he wasn't living in the area so I only saw him a few times, but the difference was stark," he said.

"My mate at work is actually doing well .. you can see the fatigue it has had on him, but he doesn't let it show.

"I don't think people realise what cancer can do to you and how quickly .... it is scary."

For this reason Sergeant Reynolds admittedly set "a rather ambitious goal" to raise $10,000 for the Cancer Council.

So far he has raised $3000 but, with six weeks left to fundraise, he said it will be fantastic to get closer to his original target.

"If there is something I can do somewhere, I am not normally one to sit around and do nothing," he said. "And to be able to come out and play golf for the day .... and raise money is kinda cool."