(REUTERS) - Two-time Tour de France champion Alberto Contador will hang up his racing bike after this year's Vuelta a Espana, bringing an end to the career of one of the world's greatest cyclists.
The Spaniard, who won all three Grand Tours in a professional career spanning 14 years, made his announcement with a message on Instagram on Monday.
"I am retiring from professional cycling. I say this happy and without sadness," the 34-year-old Contador said.
"It's a decision I have thought over very well and I don't think there is a better farewell than in the race in my country."
Contador won the 2007 and 2009 Tour de France, but was stripped of the 2010 title after a doping ban.