The event, at West Lindsey Leisure Centre in Gainsborough, is organised by South Axholme Sharks Swimming & Life Saving Club, and starts at 6pm.
Hayleigh, a keen swimmer, was killed in a car crash in December 2010, aged 23.
Memorial gala
SWIMMERS will pay tribute to a Misterton woman on Saturday 8th September in the second Hayleigh Dunne Memorial Gala.