The 2009 US Gran Prix of Cyclocross is a four weekend, eight race series comprising the Planet Bike Cup - Madison, Wisconsin on September 26 and 27, The Derby City Cup - Louisville, Kentucky on October 24 and 25; The Mercer Cup presented by Knapp's Cyclery - Mercer County, New Jersey on November 14 and 15 ; and The Stanley Portland Cup - Portland, Oregon on December 5 and 6. Each of these race weekends represent the deepest, strongest, and fastest cyclocross fields in a series format on this side of the Atlantic.
Also, new in 2009 each Saturday per USGP weekend has received a UCI C1 designation and each Sunday will be C2. Of the six UCI races currently on the US Calendar, four are USGP races.