A famously brutal tropical race: heat, humidity and hills make it a survival event rather than a fast one.
Warm Andaman Sea swim off Langkawi's beach, tropical water temperatures around 29-30°C.
Two hilly laps around the island with several short, steep pitches and extreme heat and humidity.
Undulating three-lap run along the coast road, run largely in the heat of the afternoon.
Actual monthly averages from the last 3 years (Open-Meteo). Real race day may vary.
Water temp uses athlete-reported values first, then official race data, then the marine archive (sea swims, measured at the nearest offshore point). Values tagged est. are modelled from recent air temperature for lakes and rivers, where no observational data exists.
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