SquareOne Race
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Event overview
SquareOne Race 2 is part of the BTC Triathlon Series and takes place on Sunday, 23 November 2025 in Chowder Bay / Middle Head, Mosman, New South Wales. The event is a sprint triathlon held on a course at Middle Head with a swim in the sheltered waters of Obelisk Beach, a bike on Chowder Bay Road, and a run through the historical barracks area and bushland of Middle Head Reserve. The races are open to everyone.
Course and entry
- 400 m swim - 1 lap, start and finish at Obelisk Beach
- 15 km bike - 5 laps of Chowder Bay Road
- 4 km run - 2 laps on Middle Head Road and Middle Head Reserve bush tracks
Entry fees for the event are published by the organiser: BTC and Warringah Tri Club members pay $60 per race, TA members/non BTC members pay $70, and non BTC/TA members pay $75. Registration periods listed run from September 1 to November 22. A race manual with full course descriptions and maps is available from the organiser. Visit the organization's website for the most recent information.