Mount Maunganui extreme sports athlete Flynn Chisholm has added another feat to his growing list of achievements, this time completing 4110 pull-ups in 24 hours to break the New Zealand record.

The challenge began at 11am on May 9 at Reboot Gym in Mount Maunganui and he finished the 24-hour challenge about 10 hours early.

Chisholm beat the previous New Zealand record stood of 4035 pull-ups. He surpassed that mark after 14 hours and 25 minutes, before pushing on through fatigue and cramping to finish with 4110.

“I got past the [previous] record ... then my muscles really started to seize up,” the 21-year-old said.

“I was just doing little sets of pull-ups and started to fizzle out at the end.”

Without an official Guinness adjudicator present, the attempt was livestreamed and monitored by supporters at the gym to ensure every repetition met the standard, with full arm extension and the chin clearing the bar.

Flynn Chisholm at Reboot. Photo / Kelly O’Hara

Chisholm said his strategy was to complete six pull-ups every minute for the first five hours – reaching 1800 pull-ups – before easing to five per minute for much of the remaining challenge.

To sustain himself physically, he relied on simple carbohydrates, electrolytes and caffeine.

“I had heaps of plain bread, fruit like bananas and grapes, lollies for simple sugars, baby food yoghurts when I didn’t feel like eating, and probably 10 coffees,” Chisholm said.

By the early hours of Sunday morning, only a small support crew remained beside him, including his father Simon Chisholm, younger brother Toby Chisholm and a close friend.

Flynn Chisholm said the challenge was partly motivated by his love of extreme physical goals and partly to help promote the family-owned gym. “My Dad owns the gym, so I wanted to help promote it,” he said.

“But I also love facing massive challenges. I like to get a challenge, work really hard towards it and once I crack it, move on to something else.”

The latest feat adds to an already extraordinary sporting resume.

Last August, Chisholm broke the New Zealand and Oceania death-diving record after leaping 40.5m from a cliff in Spain – a jump placing him among the highest death-divers in the world.

He’s also an elite speed climber who has represented New Zealand internationally, competing at Youth World Championships, World Cups and Oceania Championships across the globe.

Flynn Chisholm has broken the New Zealand record for pull-ups in 24 hours. Photo / Kelly O'Hara

Earlier this year, he placed fourth at the Oceania Speed Climbing Championships in Mount Maunganui and is preparing to compete at a World Cup event in Chile later this year.

Chisholm said his Christian faith played a major role in both his sport and mindset.

“I’m pretty blessed to travel the world and see God’s creation,” he said.

“Most of the time, I’m jumping at really beautiful waterfalls or cliffs. For me, it’s a form of glorifying Him and worshipping Him in those environments.”

Despite the danger associated with death-diving, Chisholm emphasised his strong focus on safety and responsible training. “I’m able to teach people to do it safely and show it’s not just a reckless sport,” he said.

Looking ahead, Chisholm hoped to secure sponsorship as he pursues his goal of becoming one of the world’s top death divers and potentially setting a new world height record.