Some examples of competitions and classes for ex racehorses:

Racehorse to Riding

www.scotnorthexracers.co.uk ScotNorth arrange showing classes for ex racehorses and give best exracehorse rosettes at a great number of shows, dressage comps, showjumping and xc competitions. We also do racecourse parades and displays at other equine events.

SEIB Search for a Star

HOYS Ex-racehorse classes

Royal International Riding Horse show championships

There many local riding Clubs have ex-racehorse classes. Check competition schedules as there are sometimes prizes for the highest placed ex-racehorse especially in eventing.