Wash. Admin. Code § 260-44-150
(1) A horse starting in a race must be fully shod with racing plates, unless approval, as described in this subsection, is obtained to allow for any other condition relating to horseshoes. Horses racing partially, or completely unshod, must be approved by the official veterinarian, declared at time of entry and noted in the official program with the following exception:
The board of stewards, in consultation with the official veterinarian and the trainer, may allow a horse to race when it has been discovered the horse has loosened or lost a shoe in the receiving barn or paddock and a repair cannot be done. If the stewards allow a horse to run unshod, the public must be notified immediately.
[Statutory Authority: RCW 67.16.020. WSR 19-03-080, § 260-44-150, filed 1/14/19, effective 2/14/19; WSR 11-09-042, § 260-44-150, filed 4/15/11, effective 5/16/11. Statutory Authority: RCW 67.16.020 and 67.16.040. WSR 09-03-011, § 260-44-150, filed 1/8/09, effective 2/8/09; WSR 08-01-053, § 260-44-150, filed 12/13/07, effective 1/13/08; WSR 07-07-035, § 260-44-150, filed 3/12/07, effective 4/12/07; WSR 06-07-063, § 260-44-150, filed 3/10/06, effective 4/10/06.]