Staff from BPL Leisure Centre and Bassetlaw Triathlon club members pooled their resources to raise money for Sport Relief on Saturday.
A group of 31 engaged in a 12-hour Aquathlon, and raised £320 for the charity.
The event ran from 7am and 7pm and involved a 30 minute spin, followed by a 30 minute swim, with entrants continuously in action in a relay.
Rob Brewin, assistant operations manager for BPL, said the Aquathlon went swimmingly.
He told the Guardian: “My personal thanks go out to Worksop Leisure Centre staff and Bassetlaw Triathlon members for taking part in the event and donating.”
“I also want to express gratitute to customers at Worksop Leisure Centre for donating and supporting this event.”