Lure coursing is an international sport in which sighthounds compete against each other and gain points towards different championship titles. The fastest dog is not necessarily the winner as the dogs are judged on five factors: speed, agility, enthusiasm, endurance and follow. The sighthounds chase a lure which is usually a grouping of three white (or multi-colored) plastic bags attached to a line. The line is then pulled along a system of pulleys. A lure course contains many twists and turns which greyhounds will run at full speed. The length of a typical lure course is 650 to 800 yards which is much longer than a greyhound course.