A Training Three Day Event has qualifications and a cross country format that differ from a training level horse trials.  Here is the information that you need to know as you prepare.

Attention: new T3D rules are in place for 2010! 

QUALIFICATIONS (Appendix 3 of the 2010 USEF Rules for Eventing)

A competitor and/or a horse may be entered in a Horse Trial without having fulfilled the qualifications noted below, provided the qualifications have been fulfilled by the closing date for entries.
In all cases, at least one Qualifying Result must be obtained in the current or preceding calendar year.

1. DEFINITIONS
1.1 Completion: means having completed the entire Horse Trial with a numerical score.
1.2 Except as noted below, National Qualifying Result (NQR): an NQR is achieved by completing the entire Horse Trial and scoring:
- not more than 50 penalty points in the Dressage Test; and
- No jumping penalties at obstacles on the Cross Country Test, and not more than 90 seconds (36 penalty points) exceeding the optimum time; and
- not more than 16 penalties at obstacles in the Jumping Test.
-25 penalty points received for Dangerous Riding will not achieve a National Qualifying Result.
1.3 International Qualifying Result (IQR): as defined in the current FEI Rules for Eventing.
- A Qualifying Result (QR) at an international competition is an IQR.
Exceptions to the qualifications noted below may only be approved by the Credentials/Grading Committee.

2. LEVELS OF HORSE TRIALS AND EVENTS
...
2.5 TRAINING THREE-DAY EVENT- 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.
EC 3/15/10 Effective immediately

FOR T3D SPECIFICATIONS SEE APPENDIX 8 OF THE 2010 USEF RULES FOR EVENTING

Technical Information for the FENCE T3D, April 2010

Entry fee; $300.00 includes stabling
 
A 2700m at 220mpm
B 1400m at 500mpm
C 3600m at 220mpm
D 2500m at 450mpm

Phase B Start Box, Ocala 2007