2. A triathlon is a multiple-stage competition involving the completion of three continuous and sequential endurance disciplines. While many variations of the sport exist, triathlon, in its most popular form, involves swimming, cycling, and running in immediate succession over various distances. Triathletes compete for fastest overall course completion time, including timed "transitions" between the individual swim, cycle, and run componentsmultiple-stage competitionmany variationsswimmingcyclingrunning

3. 1. Sprint Distance; 750-meter (0.47-mile) swim, 20-kilometer (12-mile) bike, 5-kilometer (3.1- mile) run

4. 2. Further information: Triathlon at the Summer Olympics. The sport made its debut on the Olympic program at the Sydney Games in 2000 over the Olympic Distance (swim: 1,500 m [1,650 yd] – bike: 40 km [24.9 mi] – run: 10 km [6.2 mi]). Web Link - http://www.metasport.com/sports-we- coach/triathlon/olympic-distance-triathlon/

5. An Ironman 70.3, also known as a Half Ironman, is one of a series of long distance triathlon races organized by the World Triathlon Corporation (WTC). The "70.3" refers to the total distance in miles (113.0 km) covered in the race, consisting of a 1.2-mile (1.9 km) swim, a 56-mile (90 km) bike ride, and a 13.1- mile (21.1 km) run. Each distance of the swim, bike, and run segments is half the distance of that segment in an Ironman triathlon. The Ironman 70.3 series culminates each year with a World Championship competition, of which competitors qualify for during the 70.3 series in the 12 months prior to the championship race.triathlonWorld Triathlon CorporationIronman triathlon

6. An Ironman Triathlon is one of a series of long-distance triathlon races organized by the World Triathlon Corporation (WTC) consisting of a 2.4- mile (3.86 km) swim, a 112-mile (180.25 km) bicycle ride and a marathon 26.2-mile (42.2 km) run, raced in that order and without a break. It is widely considered one of the most difficult one-day sporting events in the worldtriathlonWorld Triathlon Corporationswimbicycle ridemarathonrun Click link to watch the video on Ironman Race : https://www.youtube.com/watch?v=fGSju0GB 048