Tour du Colorado
The 2013 USA Pro Cycling Challenge is the third edition of the USA Pro Cycling Challenge stage race. Once again, the race was included on the UCI America Tour, with a UCI classification of 2.HC. As such, the race was only open to teams on the UCI Pro Tour, UCI Professional Continental and UCI Continental circuits. The race took place between August 19–25, 2013 as a seven-day, seven-stage race, traversing the state of Colorado. The 2013 USA Pro Cycling Challenge was one of six UCI-ranked stage races in the United States in 2013, and one of two (along with the 2013 Tour of California) that attracted multiple UCI ProTeams to compete.