TRIATHLON

Triathlon is a multi-sport event involving the completion of three (3) continuous and sequential endurance events-swimming, cycling, and running.

According to the International Triathlon Union, and USA Triathlon, the main international race distances are Sprint distance (750 m swim, 20 km bike, 5 km run), Intermediate (or Standard) distance, commonly referred to as "Olympic distance" (1.5 km swim, 40 km ride, 10 km run), the Long Course (1.9 km swim, 90 km ride, 21.1 km run, such as the Half Ironman), and Ultra Distance (3.8 km swim, 180 km ride, and a marathon: 42.2 km run); the most recognized branded Ultra Distance is the Ironman triathlon.

Triathlon considers to originate in France in 1920s. the origin of triathlon is attributed to a race during the 1920s–1930s that was called variously "Les trois sports", "La Course des Débrouillards", and "La course des Touche à Tout". This race is held every year in France near Joinville-le-Pont, in Meulan and Poissy.

Standard race distances

Name	Swim	Bicycle	Run	Notes
Kids of Steel	100–750  m	5–15 km	1–5 km	Distances vary with age of athlete.
Novice (Australia)	300 m	8 km	2 km	Distances vary, but this is a standard Novice distance course in Australia (often called enticer triathlons).
3–9–3 (New Zealand)	300 m	9 km	3 km	Distances vary, but this is a standard Novice distance course in New Zealand.
Super Sprint	400 m (0.25  mi)	10 km (6.2  mi)	2.5 km (1.5 mi)	Distances vary, but this is a standard Super Sprint course.
Novice (Europe)	400 m (0.25  mi)	20 km (12.4 mi)	5 km (3.1  mi)	Distances vary somewhat, but this is a standard novice/fitness distance course in Europe.
Sprint	750 m (0.47 mi)	20 km (12.4 mi)	5 km (3.1  mi)	For pool-based races a 400 or 500m swim is common. The sprint distance is the fastest growing triathlon race distance in the United States
Olympic	1.5 km (0.93  mi)	40 km (24.8  mi)	10 km (6.2  mi)	Also known as "international distance", "standard course", or "short course"
ITU-Long Distance (O2)	3.0 km (1.86 mi)	80 km (49.6 mi)	20 km (12.4 mi)	Double Olympic Distance distance of the ITU Long Distance Triathlon World Championships 2007 and 2009.
Half	1.93 km (1.2  mi)	90 km (56  mi)	21.09 km (13.1  mi)	Also known as "middle distance", "70.3" (total miles traveled), or "half-ironman".
ITU-Long Distance (O3)	4.0 km (2.49 mi)	120 km (74.6 mi)	30 km (18.6 mi)	So-called triple Olympic Distance, distance of the ITU Long Distance Triathlon World Championships most years including 2011.
Full	3.86 km (2.4  mi)	180 km (112  mi)	42.2 km (26.2  mi) marathon	Also known as "long distance" or "Ironman Triathlon".