Most multisport events are endurance races, consisting of aerobic activities such as cycling, running, kayaking and cross-country skiing.
Familiar events from the Olympic Games such as the pentathlon, heptathlon, octathlon, decathlon, and modern pentathlon are not usually considered to fall in this category, because their individual components are not held back-to-back.
The world of multisport competitions has grown from the older and more traditional triathlon and duathlon competitions, and today includes a large number of variations.
Biathlon, which consists of alternating stages of cross-country skiing and shooting, is often confused with duathlon because of the similarity in names.
Some consider biathlon to be a form of multisport event, while others exclude it from the category because the athlete's score includes shooting accuracy in addition to total race time.