Alberto Contador will retire from professional cycling immediately after the Vuelta a Espana.
The two-time Tour de France champion confirmed his retirement on his Instagram handle.
The Spaniard, 34, was twice victorious at the Tour de France in 2007 and 2009 but was stripped of the 2010 title after he tested positive for Clenbuterol – a powerful drug used to treat asthma, but which can also help build up lean muscle mass and burn off fat and was banned thereafter.
“I don’t think there is a better farewell than the home race in my home country,” he said on Instragram.
Contador, who turned professional in 2003, added: “I’m saying this happy, I’m not saying it with sadness. It’s a decision I’ve thought about very well.”
Contador won seven Grand Tour titles and was awarded the prestigious Velo d’Or, voted for by journalists, a record four times.
He is one of only six riders to have won all three Grand Tours – the Tour de France, Vuelta and Giro d’Italia.