Fastest swim relay 100 x 400 metres by a team (mixed)

According to Official Guinness Records,

The fastest swim relay 100 x 400 m by a mixed team is 8 hr 18 min 36 sec, achieved by members of Swimwear Shack (Australia) at Centenary Pool, Spring Hill, Queensland, Australia, on 17 September 2017.The record attempt was also used as an opportunity to raise money and exposure for the Eloise Gannon Foundation, which aims to increase awareness of the signs and symptoms of potentially undiagnosed Cardiac Arrhythmias in our youth.

For a complete list of 2017 records, please visit 2017 Guinness Records in Australia.

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