A splashing time was had by swimmers at the 28th Maidenhead Lions Club Swimarathon on Saturday.
Groups swam lengths of the Magnet Leisure Centre pool from 7am until 10pm to raise money for good causes.
Ed Filmore, who has organised the event for 10 years, said it was set to be the biggest and most successful Swimarathon staged by the club.
Teams swam as many lengths of the pool as possible in 55-minute time slots.
"I think this will be far and away our most succesful event yet and hope that it will give us a record amount of sponsorship," said Mr Filmore.
"I think this is the best fundraising event in Maidenhead and it's a pleasure and a privilege to be part of it."
The Lions Club hopes fundraising this year will exceed the £31,000 raised for good causes in 2012.
Half of the money raised will go to the Lions Club of Maidenhead Charitable Trust Fund.
Beneficiaries of the event last year included Cancer Research UK, the Thames Valley Adventure Playground, SportsAble and more than 40 local and national causes.
Click back later for a gallery of photos from the Swimarathon.
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