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 three horse trials at the Preliminary level or higher, plus an additional NQR at the Preliminary level or higher with no more than 20 jumping penalties at obstacles on the cross-country test.
Training Three-Day Event (T3D): Open to competitors of any age, on horses four years of age or older. Both the competitor and the horse must have obtained NQR’s at four horse trials at the Training level or higher, one of which must be attained as a combination. A competitor established at the Preliminary level may compete on a horse which has obtained 2 NQR’s at the Training level or higher.
Novice Three-Day Event (N3D): Open to competitors of any age, on horses four years of age or older. The rider must complete with a numerical final score four Novice level horse trials or higher.
**NOTE: Effective August 1, 2018 the qualifications for the BN3D and N3D will require three horse trials at the same 3D level to be competed, or higher, meeting the MER’s, plus one additional MER with no more than 20 jump penalties. Two of which must be completed as a combination (same) horse and rider.MER (minimum eligibility requirement:
Dressage – no more than 50 penalty points;
Cross-country – no jumping penalties and not more than 36-time penalties;
Show Jumping – no more than 16 jump penalties.