With the Kentucky Derby just over a month away, the final chance to nominate horses to the 2008 Triple Crown closed on March 29. Early nominations, which only cost $600, closed in January while the late nominations were $6000 each. This year only 11 horses were nominated late, 9 colts and 2 fillies. The best among them are the fillies, Eight Belles and Proud Spell, but they are probably still more likely to go to the Oaks than the Derby. Of the colts, the best are probably Big Glen, winner of the Rushaway Stakes at Turfway, and My Pal Charlie, runner-up in the Louisiana Derby.
If any additional horses not already nominated want to enter, they will have to be supplemented. Cost for this is $150,000 for the Kentucky Derby and $100,000 for the Preakness and Belmont. Even if a horse is supplemented, he is the lowest in priority for getting in the race with any early or late nominee getting preference over him. For the early and late nominees, graded stakes earnings determine their priority with the field limited to 20 starters for the Kentucky Derby with no also-eligibles allowed.
| Horse | Sire | Owner | Trainer |
| Barrier Reef | Mizzen Mast | Godolphin Racing | Saeed bin Suroor |
| Big Glen | Cactus Ridge | John Jones Jr. & Bil Jones | Frank Brothers |
| Eight Belles (f) | Unbridled's Song | Fox Hill Farms | Larry Jones |
| Hey Byrn | Put It Back | Beatrice Oxenberg | Edward Plesa Jr. |
| Jazz in the Park | Ecton Park | Russata Stabkes | Bobby Barnett |
| Kinsale King | Yankee Victor | Super Horse Inc. | Jesus Mendoza |
| My Pal Charlie | Indian Charlie | B. Wayne Hughes | Albert Stall Jr. |
| Proud Spell (f) | Proud Citizen | Brereton C. Jones | Larry Jones |
| Recapturetheglory | Ferrari | Louie Roussel III & Ronald Lamarque | Louie Roussel III |
| Rosso Corsa | Cherokee Run | Charlotte & Chris Wrather & J. F. Ernenwein | Darrell Vienna |
| Spurrier | Dixieland Band | Peachtree Stable | Todd Pletcher |
