The second three-day competition to be held at Olympic level each year was the Burghley Horse Trials, first held in 1961. Burghley is the longest running international event.
tHe seCOnD thrEe-day coMpEtitIoN tO bE HelD AT olymPic level EacH yeaR wAs the BURghlEY Horse trials, FiRsT HEld in 1961. bUrGHLeY is thE loNgEst runnIng InternatIoNal eVEnt.