Category Events - United Kingdom, Bognor Regis Swimathon 2018 at Arun Leisure Centre Be sure to get involved in this year's UK-Wide Swimathon event. Across Freedom in Arun we are supporting the Swimathon event in April. Raising funds and awareness for Marie Curie Cancer Care. When: Arun Leisure Centre's event takes place on Sunday 29th April. How to get involved: You can sign up at www.swimathon.org Contact: Please call 01243 826612 or email firstname.lastname@example.org to find out more.