At day 80 of the Last One Standing challenge, Tim Kacprzak has already run further than the distance between Sydney and Perth. The electrician from Bannockburn, near Geelong, started 2026 with a deceptively simple premise: run 1 kilometre, then add a kilometre each day. By mid-March, the cumulative total sits at over 3,160 kilometres, almost all of it completed in 10-kilometre loops around his home.
Kacprzak is one of just two athletes still standing from an original field of 314 competitors. His rival, 25-year-old Merlin Gammon, known as the "Wizard of Run," is currently towing his supplies across the Nullarbor. To keep pace with the escalating daily distances, Kacprzak has taken leave from work, sacrificing income and normalcy for the chance to answer a question most people never ask: how far can I actually go?
The challenge is the second iteration of an event run by Hardcore Harry's, a fitness platform founded in 2024 that has rapidly established itself as a focal point for extreme endurance competition in Australia. Hardcore Harry's describes itself as a platform for challenges "that celebrate effort, grit and growth." What's striking is not just the existence of such challenges, but the acceleration in demand for them. Co-founder Ethan Fleming reports a three to four-fold increase in participation across extreme fitness challenges in recent years.
"There has been a noticeable increase in the amount of people wanting to take on fitness challenges in recent years, particularly those at the more extreme end," Fleming said. The pattern reflects something deeper: a reaction against abundance. "In the last few years especially we've seen a three-to-four-times growth in the amount of people that take on these challenges, and the level of extreme that they go to achieve these goals."
Fleming offers a hypothesis for this trend. "I think one of the reasons is we do live in a world where there's so many creature comforts," he explains. "I think for people like these people, all these people that want to push themselves, they just want to have an arena where they can find their limits."
For Kacprzak, 43, the motivation is personal rather than competitive. "I think for me it's about finding my own limit, and I'm finding that there's new limits every day," he says. Unlike traditional sports where victory is measured against opponents, ultra runners tend to measure themselves against themselves. Each milestone becomes not an endpoint but a new starting point. "I think there's different levels to pushing beyond your limits, and when you stop at one point you don't start at the bottom again, you start at that same point that you got to, and then you want to know what's further, what else can I do?" Kacprzak notes.
The growth in ultra-endurance events reflects broader shifts in Australian sport. Ultra-marathon participation has grown substantially, with events now spanning distances from 50 kilometres to multi-day challenges. Margie Hadley, a Perth ultramarathon runner who finished third in the Last One Standing challenge, articulates the appeal succinctly. After recovering from cervical cancer more than a decade ago, she decided to "do hard things." Her response to why she repeatedly tests her limits is a rhetorical question: "Why not try to find your limit and see how far you can go?"
Yet the brutal attrition rate suggests this pursuit of limits comes with genuine costs. Beginning with 314 competitors, only two remain at day 80. Hadley's withdrawal at day 76 came when her body simply could not continue. Such outcomes raise questions about the sustainability and wisdom of pushing so far beyond conventional endurance. Yet for those who remain, the answer seems clear: they are enjoying the challenge too much to stop. The gap between what Kacprzak thought he could do at the start of the year and what he is now accomplishing is precisely the point.