Your horse or your pony has reached the age of 3; its sporting career will be able to start! To make your horse or pony compete, regardless of the discipline you choose, you have to ensure it has horseshoes and give it a saddle and a bridle. You must buy all these items in the breeders's store. With regards the saddle and the bridle, you have to put them into the saddlery before being able to assign them to a horse (note that you cannot sell back what you have put into the saddlery). For the horseshoes, it is interesting to know that the horseshoes of a horse that is a resident of an equestrian center that employs a blacksmith will wear 3 times slower than those of a horse placed in an equestrian center that does not employ one.
The competitions enable you to win money depending on your success but also to increase your horses's skills; but their potential is not, however, unlimited. At the end of a given time, the competitions will no longer increase their skills. Regardless of the discipline, speed races, cross-country or show jumping, each competition has a difficulty level of between two percentages for a skill, with each player putting its competitions at the level they wish.
for the speed races, access to registration is determined by the trotting level for the trotting breeds and the galloping level for the galloping breeds, for the cross-country, access to registration is determined by the stamina level, for the show jumping, access to registration is determined by the jumping level.
For each type of competition, you have filters, such as the type of race for the speed races and, for each one, the distance over which it is run. You can only register two horses or ponies from your stable in the same competition.
from howrse.com