Animal welfare protesters will again picket Adelaide's Oakbank Easter Carnival to oppose the "dangerous" jumps racing event.
The Coalition for the Protection of Racehorses says jumps racing is 19 times more dangerous to horses than flat racing.
"The risks are so high and the tracks so gruelling, that last year's starters had a 12 per cent chance of failing to even finish the course," Coalition campaign director Elio Celotto said.
"Even worse, if you were a horse forced to compete in the 2018 jumps season, the odds of you being killed were one in 22."
The Coalition will hold rallies at the entrance to the Oakbank Racecourse on Saturday and Monday
Jumps racing has been banned across Australia except in South Australia and Victoria.
Mr Celotto said many South Australians are boycotting the races and attendee numbers are dwindling, but the racing industry is not listening.
"Meanwhile, horses are being killed," he said.
He said attempts to make jumps racing safer are failing, and last season recorded the highest number of horses killed in races since 2011.
"Eight horses were killed over the 2018 jumps season," he said.
"With one horse already killed this year, there is little doubt this season will be any less shocking than the last."
The Oakbank Easter Carnival hosts two of Australia's premier hurdle and steeplechase races, and is held on Easter Saturday and Easter Monday each year.
Australian Associated Press