Triathlon, for the 2023 Island Games, was held at Rocquaine Bay, Guernsey on 9 July and St Peter Port, Guernsey on 14 July 2023.

[1] *   Host nation (Guernsey)Swim 1500m, Bike 41km, Run 10km [2] Swim 1500m, Bike 41km, Run 10km [2] Each team member - Swim 400m, Bike 6km, Run 1,500m.

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