Below is a list of the riders already signed up to compete in the USGP, 55 Riders confirmed from 12 different countries. Man, what an event this will be!
| Pro Class | Junior Class | 125cc Class | Guest Class |
| Toni Bou, Spain | Francesc Moret, Spain | Bradley Cox, Great Britain | Drew Fortner, USA |
| Adam Raga, Spain | Pol Tarres, Spain | Gabriele Giarba, Spain | Raymond Peter, USA |
| Jeroni Fejardo, Spain | Jorge Casales, Spain | Quentin Carles De Caudenberg, France | Drew Harker, USA |
| Albert Cabestany, Spain | Jacke Shepard, Great Britain | Pietro Petrangeli, Italy | Andreas Niederer, USA |
| Takahisa Fujinami, Japan | Maxime Warenghien, Belgium | Timo Myohanen, Finland | Alan Shirley, USA |
| James Dabil, Great Britain | Cedric Tempier, France | Martin Matejicek, Czech. Republic | Tom McNeal, USA |
| Jack Challoner, Great Britain | Hakon Pedersen, Norway | Declan Bullock, Great Britain | Quinn Wentzel, USA |
| Daniel Oliveras, Spain | Carles Traviesa, Spain | Ignacio Martin, Spain | Alexander Niederer, USA |
| Michael Brown, Great Britain | Kyle Middleton, Australia | Ignacio Fernandez, Spain | |
| Matteo Grattarola, Italy | Steven Coquelin, France | Daniel Blonc Gonnet, USA | |
| Loris Gubian, France | Jonathan Richardson, Great Britain | Kenny Thomas, France | |
| Pere Borrellas, Spain | Sverre Lundevold, Norway | Aaron Thistle, USA | |
| Alexandre Ferrer, France | Filippo Locca, Italy | Marke Wunsch, Czech Republic | |
| Benoit Dagnicourt, Spain | Martin Pochez, France | Samuel Fastle, USA | |
| Patrick Smage, USA | Bryan Roper, USA | ||
| Karl Davis, USA | |||
| Logan Bolopue, USA | OPEN INTERNATIONAL CLASS | ||
| Cody Webb, USA |
