Effective April 1, 2010, the Federation approved national rules specifically for the Preliminary Three-Day Classic format, for inclusion in the 2010 USEF Rules for Eventing (See specifically EV155-156 and Appendices 3 and 8). The P3D, as a USEF Recognized Division, is a qualifier for the Intermediate horse trials level and CCI1*.

MINIMUM QUALIFICATIONS:
Preliminary Three-Day Event (P3D): Open to competitors beginning the calendar year of their 14th birthday, on horses five years of age or older. Both the competitor and the horse, though not necessarily as a combination, must have obtained an NQR at four horse trials at the Preliminary Level or higher.

National Qualifying Result (NQR):
A NQR is achieved by completing the entire horse trials and scoring: Not more than 50 penalty points in the dressage test; no jumping penalties at obstacles on the cross-country test, and not more than 90 seconds (36 penalty points) exceeding optimum time; and not more than 16 penalties at obstacles in the jumping test.

2010 USEF Dressage Test for Preliminary Three-Day Events

Minimum Qualification Requirements (abridgment of USEF Rules for Eventing for easy reference)

2009 Preliminary Three-Day Event Series

Follow the links below to each event's USEA Omnibus page and results.

• May 20-24 - Virginia Horse Trials & 3-Day Event, Lexington, VA (Area II) Results
• Jul 23-26 - Event at Rebecca Farm, Kalispell, MT (Area VII) Results
• Oct 1-4 - Morven Park , Leesburg, VA (Area II) Cancelled
• Oct 15-18 - Hagyard Midsouth Three-Day Event & H.T., Lexington, KY (Area VIII) Results
• Oct 29-Nov 1 - Galway Downs Three-Day Event & H.T., Temecula, CA (Area VI) Results