Triathlon Sports Photography: The challenge of triathlon is coming to Southend. On Sunday 28th May 2017 Sundried will host its first sprint triathlon. With an open water swim, quiet country roads and a sea air run this is a perfect event for athletes looking to achieve a personal best or first timers looking for a simple course to enter the world of triathlon. Images will be taken during the event and will be uploaded during and after the completion both on social media and the website.