A horse race is a competition between two or more horses in which each is guided by an experienced jockey. The sport has a long history and was practiced in ancient civilizations. Archaeological records suggest that it was popular in Egypt, Babylon and Syria. It was also a prominent feature of the Olympic Games and was included in the chariot racing events sponsored by the Greeks and Romans. It has played an important part in mythology, especially in the contest between Odin’s steeds and the giant Hrungnir.

Horses are bred and trained to race. They are divided into a number of categories based on their performance and pedigree. The fastest and most valuable are the Thoroughbreds, followed by the Quarter Horses and Arabians. Other breeds, such as the American Mustang and the Irish Draught, are not as fast or as desirable for racing but still have a role to play in other disciplines. The sport is regulated by the British Horseracing Authority.

Races are typically run on flat surfaces, with varying degrees of difficulty. Individual races are generally classified as sprints or longer distances, with sprints seen as a test of speed and the latter considered a test of stamina. In both types of races, the ability to accelerate quickly (a turn of foot) is essential.

There are a variety of different track designs, with ovals being common around the world. The surface of the track varies as well, with dirt being preferred in North America and Europe while turf is the preferred surface in Asia. The use of synthetic surfaces is increasing in some areas.

The sport of horse racing is a multi-billion dollar business, and a significant portion of the betting activity takes place online. Online wagering has made it easier and more convenient for people to place bets on the outcome of a race without leaving the comfort of their own home. Online gambling websites offer a wide range of bets, from individual horseraces to groupings and accumulators. Most websites require the bettor to register before placing a bet, but many offer a trial period that allows new customers to try out the service for free before making a commitment.

Two horses were killed at Churchill Downs this weekend, bringing the total number of fatalities at the racetrack to 12 over the past month. The head of horse racing’s oversight body says Churchill Downs will likely accept a recommendation to pause races if necessary. The deaths of the horses were caused by a combination of factors including an unfavorable track condition and colic. Trainer Bob Baffert has come under fire for his handling of the horses. In particular, he was accused of using a banned substance on the horse named Medina Spirit. The incident was criticized by animal rights groups and prompted calls for him to be banned from the sport. However, he denied the allegation that he used the drug to make his horses faster.