Holland was selected ahead of Blatchford to represent Great Britain at the 2012 Summer Olympics in the women's triathlon alongside Helen Jenkins and Lucy Hall. The event took place in Hyde Park with the swim being held in the Serpentine. The cycle involved athletes leaving the park via Queen Mother's Gate, travelling through Wellington Arch, down Constitution Hill and on to Birdcage Walk in front of Buckingham Palace before returning to the park to complete the event with a four-lap run around the Serpentine. Holland completed the course in two hours, two minutes, and 55 seconds, 26th in the field.