Richard Hughes says he is "comfortable with the decision" to retire at the end of the Qatar Goodwood Festival on 1 August.
The three-time champion jockey announced earlier in the year this would be his final season, but the 42-year-old has now decided to hang up his saddle earlier than had been anticipated.
Hughes is poised to embark upon a training career as early as the autumn, and admitted the demands of preparing for his new vocation, allied to performing to his best on a racetrack, hastened the decision to move forward his retirement plans.
Hughes said: "I've always given 100% in everything I've done and I don't want to stop doing that now.
"To be a champion jockey and to be successful you have to be totally committed.
"It's become clear in the last two weeks that I've realised what that [training] will entail.
"I always knew this was going to be my last year, and I'm comfortable with the decision [to retire after Goodwood].
"Whenever I was going to retire I was always going to miss out on riding good horses.
"Now is the time."
