Swimming Relay, Most Participants, One Length Each, 24 Hrs
 
WHO:
Swim for Children
WHAT:
3,941
WHERE:
Padova, Italy
WHEN:
June 12 20010

The most participants to swim one length each in a 24 hour relay is 5,028 and was set by Swim for Children (Italy) on 11-12 June 2010 in Padovanuoto, Padova, Italy.