The 2009 Giro d'Italia was the 92nd running of the Giro d'Italia, one of cycling's Grand Tours. It was held from 9 to 31 May 2009, and marked the 100th year since the first edition of the race. Starting in Venice and finishing in Rome, 22 teams competed over 21 stages.
The Giro was raced on a unique path through Italy, taking the peloton to some historic cities and towns in Italian cycling. Though the route lacked any well-known, storied climbs, the many intermediate and mountain stages in the second and third weeks of the race proved deceptively difficult. The 10th and the 16th stages were both called the race's queen stage, as both contained multiple difficult mountain climbs.
Riders protested during the ninth stage, a criterium in Milan. This protest was nominally about the overall safety conditions of the stage, and was sparked by life-threatening injuries sustained by Pedro Horrillo the day before. In the protest, riders declined to contest the stage except for a final sprint finish, a decision that proved controversial with race organizers and fans.
Denis Menchov won the race, having taken the lead in a long time trial in stage 12, and defended vigorously against attacks by his closest challenger, Danilo Di Luca, during the mountain stages of the final week. Di Luca came in second, 41 seconds behind the winner, and won the mauve jersey as points classification winner. Subsequent to the Giro, both he and third-place finisher Franco Pellizotti became embroiled in doping scandals, were given bans, and had their results stripped.