Mon, 15 Sep, 2025 - 14:56 TWO Olympic swimmers joined a 24-hour sponsored swimathon at Graiguecullen Swimming Pool to raise vital funds for swimming lessons for autistic children, with the event raising around €38,000 for Autism Heroes. The fundraising marathon ran from 5pm on Saturday at weekend, with Irish Olympians Danielle Hill and Erin Riordan lending their support to the cause.