However, he will still be very much involved with the running of the stable.
"Nothing will change really, I just won't have my name in the book and I'll be helping Debbie," Sanders said.
"I got a bit crook last year and had a warning sign in November. I had a stroke, but I'm pretty good now. Doing nothing is no good — you've got to keep busy."
Sanders and his father were the country's dominant trainers during the 1970s and won five straight premierships during that period.
"In the early days we had a big team of horses," he said. "We won five in a row and we would have probably won the next two if we had stayed together, but it was time to move on in the game."
Sanders, who has a winning tally in excess of 1200, subsequently trained in his own right and later in partnership with his son Mark and latterly Debbie.
"The best horse I had was Ballroom Babe, she won three group ones, and Elevenses was another group one winner," he said.
Despite an injury-plagued career, Pasta Post won a group one Easter Handicap (1600m).
"He could have been the best, but he was unsound," Sanders said.
"We also won two Auckland Cups with Prized Lady and the second was special because she was ridden by [son-in-law] Mark [Sweeney]."
Sanders celebrated the last group one success of his career with Fanatic in the 2016 New Zealand Oaks (2400m).
- NZ Racing Desk