OLYMPIC swimmer Nicola Jackson and younger sister Joanne, tipped as a star of the future, will be leading a charity marathon at Richmond Pool.

The sisters are helping to promote the Butlins Swimathon, which challenges entrants to complete a variety of distances, depending on ability, raising money for charity along the way.

Swimmers are being urged to set aside Sunday, March 23, to tackle 1,500m or 10,000m.

There are also events for teams of swimmers .

More details are available at Richmond Pool, by telephoning 0845 3670036 or online at www.swimathon.org

The closing date for entries is on Tuesday, next week.