Island Triathalon Festival 2026

Join us in Stockton for a weekend of swim, cycle, and run at Newcastle’s iconic Island Triathlon Festival and make your race count for more by fundraising for a cause close to your heart.

Just 700 metres across the harbour from Newcastle, Stockton offers a relaxed, seaside vibe that’s perfect for a weekend of racing and community connection.

Help Australian Cancer Research Foundation (ACRF) supercharge brilliant life-saving research for all cancers and sign up to participate in this iconic event. Every dollar you raise will add up to millions of dollars of impact for the 2 in 5 Australians who will be diagnosed with cancer before the age of 85. By fundraising for ACRF, you'll be making sure the people you love don’t miss out on the cancer research they need.