If you're betting on horse races, you may be wondering what to do with your dosage. This article will cover the Dosage diagram for horse races, and show you the famous races where horses over three years of age are allowed to compete. There's also some information on how to make a run in a horse race. Here are some useful tips to help you make the best bet. Regardless of what your experience level is with horse racing, you can use the information in this article to help you pick the right horse to win. Dosage diagram for horse raceIf you are betting on a horse race, you'll want to know how much the horses' Dosage Profile will be. A Dosage Diagram is an easy way to make educated wagers based on the horses' past performance. The diagram lists five figures in ascending order of performance. The Secretariat Dosage Profile was 20-14-7-0, and this number will change if the horse runs more than five times. Essentially, the Dosage Diagram relates speed and stamina to horse performance. When the CD is between -2 and +2, a horse has the potential to run farther than it could in the race. A decreasing CD indicates that a horse may not be very fast or may have trouble staying on the lead, while a rising CD means that the horse has the potential to run farther than it is matched up to. Make a run in a horse raceHow to make a late run in a horse race? First, determine which horse will run as the front-runner. These are also called speed horses, rabbits, or front-runners. They like to go hard at the start of the race and typically maintain their lead throughout. Horses shuffled to the back of the field will have difficulty closing in on the front-runner. The jockeys of front-runners will push the pace early in the race and take their horses wide around the early turns. To learn how to make a run in a horse race, first understand the rules of racing. Horses are not timed from the gate, but from their running start. They are timed using the official distance of the race, plus the distance in front of them. As the front horses tire, they will start to make a run and make up ground. If this horse isn't close to the leader, they will be a dead heat. Famous races that admit horses older than three years oldThroughout organized racing, 3-year-olds have been the norm. That means the famous horse races admit only the youngest of thoroughbreds. The older horses are not as well-developed as their younger counterparts and, as a result, have trouble competing with the younger ones. Fortunately, some famous horse races have age restrictions. Below, you'll find some of the famous horse races that accept horses over three years old. Although most racehorses are under six years old, there are also several older racehorses that are as old as nine. While there is no definitive age limit for horses to race, most will reach their prime racing age between four and five years of age. A rare exception to this rule is the occasional exceptional horse that can compete much longer than three years old. A thoroughbred's birthday is January 1 - making it easier to compare performances and identify potential champions.