David Zabriskie is a retired professional road bicycle racer from the United States, who competed as a professional between 1999 and 2013. His main strength is individual time trials and his career highlights include stage wins in all three Grand Tour stage races and winning the US National Time Trial Championship seven times. Zabriskie is known for his quirky nature, including singing before stages and the interviews he does with fellow riders in the professional peloton which are posted on his web site.

The 2005 Tour de France was the 92nd edition of the Tour de France, one of cycling's Grand Tours. It took place between 2–24 July, with 21 stages covering a distance 3,593 km (2,233 mi). It has no overall winner—although American cyclist Lance Armstrong originally won the event, the United States Anti-Doping Agency announced on 24 August 2012 that they had disqualified Armstrong from all his results since 1 August 1998, including his seven Tour de France wins from 1999 to 2005. The verdict was subsequently confirmed by the UCI.