This year however the challenge is personal - Mr Claybourn will be dedicating his climb to his brother-in-law, who passed away last year after battling leukaemia.
Some of his teammates will also be dedicating their climb to local people affected, like eight-year-old Kingston Karangaroa-Mohi, who has been battling Leukaemia for the past four years.
Some of the team - a mixture of career, and volunteer Fire Fighters - have been taking on the challenge every year. But this year will be the first time for some members, or a second go for others, like firefighter Simon Thomson.
Mr Thomson said he had decided to go "back for a second time", as it offered a personal challenge, and to help raise money for LBC.
Mr Thomson said while he and his team mates were "reasonably fit already", they had been preparing by using stairs around Napier for training.
"Its been six months of training for 15 to 20 minutes of stair climbing," Mr Claybourn added. "It's hard work but it's nothing like what people suffering from Leukaemia do.
"It's nothing in comparison to that."
As well as balancing training with their fire service duties with other roles, the team have also been fundraising consistently for the challenge.
"A lot of effort goes into fundraising, and we all have individual fundraising goals we want to reach," Mr Thomson said. "The more you can fundraise the better."
The team have been fundraising through a host of means - from collecting donations outside supermarkets, or walking on a treadmill inside Countdown supermarket.
With the help of 73 sponsors the Napier team have already raised over half of their $20,000 goal, making them one of the top ten fundraising teams in New Zealand.
But they're not stopping there - the team will continue to fundraise over the next two weeks, and will be hosting a Quiz Night next week.
Overall fundraising for the event is close to $600,000, with only a couple of weeks remaining to meet the fundraising target of $900,000.
The funds raised from event go back into the community by helping LBC continue to run their service supporting Kiwis and their families right across New Zealand who are living with a blood cancer.
Last year's event raised a record $1.16 million for LBC, which receives no government funding.
Leukaemia & Blood Cancer New Zealand CEO Pru Etcheverry said as the event had grown every year the level of support from the firefighters and their communities continued to grow as well.
"We can't thank this wonderful group of firefighters and their supporting communities enough for all the time and effort they invest into fundraising for us while also training for the event on top of their usual lives and jobs," she said.
"It really is humbling to hear their stories and we are incredibly grateful."
- Join the fun at the team's Quiz Night on Saturday May 6 at 7.30pm, at Napier's Tabard Theatre. Tickets are $15, prizes on the night.
- Or, donate online to help Napier Sky Tower Challenge Team reach their goal at goo.gl/ZdKXDD.
- Check out the Napier Sky Tower Challenge Team on Facebook for updates.