Fastest swim relay 1,000 x 50 metres
Who
S-win Swimming Group
What
8 hr 4 min 39.85 sec hour(s):minute(s):second(s)
Where
Japan (Saitama in Japan)
When

The fastest swim relay 1,000 x 50 metres is 8 hr 4 min 39.85 sec and was achieved by S-win Swimming Group (Japan) at Omiya Swimming School in Omiya, Saitama, Japan, on 4 October 2015.

Swimmers from multiple S-win swimming group schools came to Omiya swimming school to attempt the record.