World record (unofficial) 8 feet 31/2 inches. A visitor wrote in to tell us that the "unofficial" world record jump is 8ft, 3 1/2 inches, jumped by Fred (Freddie) Wettach, Jr. Riding his horse King's Own. They jumped in front of 25 people with motion picture photographers capturing the occasion. The record was not considered official because it was not made in front of a public gathering.
This horse was a Thoroughbred born in Chile, and originally called "Faithful". He was a racehorse and retired from racing in 1944 to begin training in the Chilean Cavalry School. There he was taught dressage and jumping. His training was overseen by Chilean Cavalry Officer Major RAFAEL MONTTI, who was in charge of several other horses at the time and hoped to train one that could beat the current world record, set by Captain Antonio Gutierrez of the Italian Cavalry on an Irish horse named Osoppo.
Huaso's turn at the gigantic 2.47m fence came next. On his first try, he refused. On his second, with much effort, and showing correct form, he jumped... but his belly grazed the top rail. On his third, and last chance, he and his rider soared over the fence in perfect form and harmony. They broke the world record that day.
After setting the record, (he was 16 years old when he jumped) Huaso was retired and never ridden again. He died of natural causes at the ripe age of 29.
The record for highest obstacle cleared by a horse and rider in a Puissance
competition is held by Leonardo and his rider, Franke Sloothaak. In 1991, this pair jumped a puissance wall standing 7 feet 10 inches high. Horses are also capable of jumping obstacles of great width. The world record long jump was set on April 26, 1975 by a horse named "Something" ridden by a Mr. Andre Ferreira. This pair jumped a distance of 8.40 meters (27 ft. 6 in.).
Note: information found online.