What’s Happening?
Townsville is preparing to host Australia’s largest women-only functional fitness competition for 2026, bringing together women of different ages and fitness levels.
The Butterfly Effect Competition will take place at CrossFit Townsville on Sunday, 11 October 2026, with participants taking on fitness challenges that celebrate strength rather than appearance.
Unlike traditional competitions, the event focuses on personal achievement, body confidence and the importance of supporting other women. It also raises awareness about eating disorders and negative body image while supporting the Butterfly Foundation.
Why It Matters
The Butterfly Effect Competition was established to challenge traditional beauty standards and create a more inclusive environment for women in fitness. What began as a grassroots initiative has since developed into a movement that values physical strength, teamwork and self-worth.
Co-Founder Rowena Calderwood said the idea emerged when conversations about body image were often overlooked in mainstream fitness competitions.
“The Butterfly Effect started in 2015 as a grassroots initiative to create a safe and empowering competition space for women in fitness, at a time when body image and inclusivity weren’t often part of the conversation in mainstream events,” Calderwood said. “We launched with a handful of teams and a strong purpose: to support the Butterfly Foundation, raise awareness for eating disorders, and challenge narrow beauty ideals in the fitness space.”
While the competition has grown considerably, Calderwood believes its appeal extends beyond the physical challenges. Participants also value the connections they make and the encouragement they receive from other women.
“We’re more than a comp- we’re a movement. Athletes don’t just enter for fitness. They join for the values, for the vibe, and for the emotional impact,” she said.
By The Numbers
- 300 women of various ages and fitness levels will participate in the Townsville competition on Sunday, 11 October.
- Around 1,200 people are anticipated to attend and support the athletes, with Townsville City Council partnering with organisers.
- More than one million Australians are living with an eating disorder, highlighting the importance of awareness and support initiatives.
Local Impact
The strong response from Townsville has encouraged organisers, with competitor tickets attracting considerable interest ahead of Sunday’s event. Hosting the competition locally also gives women an opportunity to participate in a major fitness event surrounded by friends, family and supporters.
“We are so excited to see the demand for the Butterfly Effect Competition in Townsville,” Calderwood said. “We are partnering with Townsville City Council and expecting around 1200 people to come out and support the athletes. It’s going to be a fantastic event!”
For co-organiser Karly Kentwell, the support participants receive is just as meaningful as their achievements during the competition. She particularly values seeing women encourage one another while their families celebrate from the sidelines.
“When I see a woman achieve something she didn’t think she could do, when I see kids/dads/friends in the crowd watching and cheering the athletes on and most importantly when I see women come together and celebrate each other- that’s what I love the most.”
Zoom In
For Calderwood and Kentwell, the competition’s focus on eating disorder awareness and body positivity is deeply personal. Both have experienced the emotional effects of negative body image, which have influenced their approach to creating a more supportive fitness environment.
Calderwood grew up with a mother who suffered from anorexia, an experience that shaped her relationship with food and appearance. As a child, she began associating self-worth with body size, carrying those beliefs into her teenage years.
“I spent most of my childhood worried about food and ironically my teens not really caring about food at all. I believed ‘fat’ was what separates you from being a ‘good’ or ‘bad’ person,” she said.
Her perspective eventually changed during her twenties, when she became homeless and survived on scraps left on people’s plates at cafes. That experience taught her the importance of food and properly nourishing her body, leading her to promise never to take her health for granted again.
Kentwell faced different challenges while growing up in Asia, where she frequently compared her body with those of her peers. Although she was athletic and had never struggled with her weight, she often felt uncomfortable about being taller than others around her.
“Growing up in Asia, where my peers’ builds were typically quite slight, I found myself constantly comparing. Even though I was athletic and ‘skinny’ and never struggled with my weight, just being a little taller than my peers was enough to make me feel like I was ‘fat’,” Kentwell said.
Those feelings continued into adulthood, leaving her conscious of the difference between how others viewed her appearance and how she perceived herself.
“What I saw in the mirror never quite matched how others saw me. This has carried on to my adult life. I still struggle to not critique every part of my body. It will always be a work in progress.”
These experiences have strengthened Kentwell’s commitment to helping women appreciate their bodies for what they can achieve, rather than how they look.
“The aim is to shift the focus from appearance to appreciation for what our bodies can do. Everyone’s journey is different, and I want to help create a space where women feel empowered by their strength, not defined by their looks,” Kentwell said.
Zoom Out
Now in its 11th year, The Butterfly Effect Competition has expanded beyond Australia, operating across multiple countries and attracting thousands of athletes. Its growing popularity has led to sold-out events, reflecting the demand for competitions built around inclusivity and encouragement.
Despite its international growth, the event continues supporting the Butterfly Foundation, an organisation dedicated to helping people affected by eating disorders and body image concerns.
The organisers also highlight the seriousness of eating disorders, stating that more Australians die from these conditions each year than the annual national road toll.
These concerns remain central to the competition’s purpose, particularly as Calderwood and Kentwell work to challenge the pressure women face over their appearance. By connecting fitness with conversations about health and body acceptance, the event encourages a broader understanding of what being strong means.
What To Look For Next?
Sunday’s competition will bring athletes, families and supporters together at CrossFit Townsville for a day focused on strength and encouragement.
