Triathlons are typically held over three days. The first day is called the swim portion, where athletes compete in swimming races. The second day is the bike portion, where athletes ride their bikes around a course. The final day is the run portion, where athletes race against each other on foot.

Triathletes can choose from different distances. There are sprints, half-marathon, marathon, and ultra-marathon distances. A typical triathlon consists of a 1.5-mile swim, 40-mile bike ride, and 10-mile run.
Triathletes can participate in any number of races throughout the year. Some popular ones include Ironman Hawaii, the World Championships, and the Olympic Games.
Triathletes have a wide variety of equipment that they use during the race. They may wear wetsuits, helmets, knee pads, elbow pads, wrist guards, gloves, and shoes.
Triathletes often train for months before competing in a race. This training includes running, biking, swimming, and weightlifting.
Triathletes usually begin training at least two years prior to a competition. Training begins with a base phase, which involves building endurance and stamina. Then comes the build phase, where athletes increase their speed and power. Finally, there is the peak phase, where athletes focus on improving their time.