Each year hundreds of thousands of people descend on the Gold Coast for major events. Exposure to heat and humidity at these events is underestimated, resulting in a spike in preventable hospital presentations and consequences of heat-related illness. Australia currently lacks a clear, data-driven approach to managing heat risk at mass-gathering sporting events. We plan to bring together the public health unit, emergency departments, major events, and local universities in a coordinated collaboration. The goal is simple - generate the evidence for smarter resourcing that safeguards our health system and empowers our communities to act early on heat illness, ensuring positive experiences at major sporting events on the Gold Coast. The health positive benefits are immediate and long-term: fewer preventable hospitalisations, safer events, reduced pressure on emergency services, and avoiding the human and financial costs of getting it wrong.