Jack Sosinski is an Australian long‑course triathlete based on the Gold Coast, who has steadily built his profile on both national and international circuits. Since turning professional in 2019, Jack has combined a strong endurance foundation with tactical race execution, marking him as one of Australia’s promising triathlon talents.

Competing across 70.3 and full‑distance events, Jack’s 2025 season features multiple standout performances that underline both his competitive mindset and potential for future podiums:

• 🥉 7th – IRONMAN 70.3 Port Macquarie (May 2025) – 3:24:24

• 🥈 11th – IRONMAN Cairns (June 2025) – 8:15:52
  
• ⚡ 5th – IRONMAN 70.3 Sunshine Coast – 3:42:41
  

These performances reflect Jack’s growing experience and his evolution into a well‑rounded athlete—consistent across swim, bike and run, and increasingly competitive at the long‑course level.

Representing Training House Shop, Jack is committed to smart fuelling, performance optimisation and evidence‑based training. His partnership reflects a shared dedication to supporting endurance athletes who aspire to elevate their racing and longevity in sport.

As Jack continues to ascend, his focus remains clear: refine the process, take every race seriously, and steadily climb towards podium finishes while inspiring the next generation of triathletes.