The prestigious Defender Burghley Horse Trials in Stamford, England, is set to begin, featuring a record-breaking field with over 300 horses and 76 riders, including top equestrians like Zara Tindall, Ros Canter, and Tom McEwen. Tindall, a seasoned competitor, is preparing to showcase her horse, Class Affair, while fellow competitor Will Oakden arrives with hopes of replicating his recent success from the Blair Castle Horse Trials. This year's event promises a comprehensive test of equestrian skills, including dressage, cross-country, and showjumping, alongside extensive shopping opportunities for attendees. The trials will feature notable participants such as past winners and Olympic champions, making it a highly anticipated event in the equestrian calendar. Additionally, the Lluest Horse and Pony Trust is hosting an Open Day and Dog Show, inviting the community to learn about their equine rescue efforts. Doug O'Neill also aims to make history by attempting to win both the Pacific Classic and the Humboldt Marathon in the same year with his horse Mucino.