Athletics, also known, especially in American English, as track and field or track and field athletics, is a collection of sport events, which can roughly be divided into running, throwing, and jumping. The word is derived from the Greek word "athlos" meaning "contest".

History
Athletics was the original sport at the first Olympics back in 776 BC where the only event held was the stadium-length foot race or "stade". The earliest recorded win was at these games in the stade race.

There were several other "Games" held throughout Europe in later eras:

The Pythian Games (founded 527 BC) held in Delphi every four years 
The Nemean Games (founded 516 BC) held in Argolid every two years 
The Isthmian (founded 523 BC) held on the Isthmus of Corinth every two years (one year being that which followed the Olympics) 
The Roman Games — a direct imitation of the Greek Olympics, however was a much more popularized spectacle, with most competitors likely to have been professional athletes (the Greek Olympics was more a common-man's fare). Many themes of the Roman Circus (chariot races, gladiatorial combats and wild animal displays) were incorporated into the Roman Games asides from athletic sports. 
Other peoples enjoyed athletic contests, such as the Celts, Teutons and Goths who succeeded the Romans. However these were often related to training to war, and were not very well organized. In the Middle Ages the sons of noblemen would be trained in running, leaping and wrestling, in addition to riding, jousting and arms-training. Contests between rivals and friends may have been common on both official and unofficial grounds. Many athletic sports have found favour in Europe throughout the ages. However, at least in Britain, they fell out favour between the 13th and 16th centuries due to government restrictions on sports aiming to reduce the practice of archery. After this ban was lifted in the 17th century sports began to flourish once more, but it was not until the 19th century that organization began to appear. 

This included the incorporation of regular sports and exercise into school regimes. The Royal Military College, Sandhurst has claimed to be the first to adopt this in 1812 and 1825 but without any supporting evidence. The earliest recorded meeting was organised at Shrewsbury, Shropshire in 1840 by the Royal Shrewsbury School Hunt. There are details of the meeting in a series of letters written 60 years later by CT Robinson who was a pupil there from 1838 to 1841.

Modern athletic events are usually organized around a 400 metre running track, on which most of the running events take place. Field events (jumping and throwing) often take place in the field in the centre of the running track.

Many athletic events have an ancient origin and were already conducted in competitive form by the ancient Greeks. Athletics was included in the first modern Olympic Games in 1896 and has been part of the program ever since, providing the backbone of the Olympics. Women were not allowed to participate in track and field events in the Olympics until 1928. An international governing body, the IAAF was founded in 1912. The IAAF established separate outdoor World Championships in 1983. The AAU (Amateur Athletic Union) was the governing body in the United States until it collapsed under pressure from advancing professionalism in the late 1970s. A new governing body called The Athletics Congress (TAC) was formed, it was later renamed USA Track and Field (USATF or USA T&F). An additional, less structured organization, the Road Runners Club of America (RRCA) also exists in the USA to promote road racing.

Both organizations allow athletes to receive money for racing putting an end to the "shamateurism" that existed before.


Indoor track and field
There are two seasons for track and field. There is an indoor season, run during the winter and an outdoor season, run during the spring and summer. Most indoor tracks are 200 meters, however, less frequently, there are smaller and larger tracks that measure from between 180 to 300 meters. The indoor track consists of four to six lanes instead of the eight to ten on an outdoor track. Often an indoor track will have banked turns to compensate for the tight bends.

In an indoor track meet athletes contest the same events as an outdoor meet with the exception of the 100 m and 110 m/100 m hurdles (replaced by the 60 m sprint and 60 m hurdles at all levels), and the 10,000 m run and 3,000 m steeplechase. Indoor meets also have the addition of a 3,000 m run , normally instead of the 5000m(at both the collegiate and elite level).

In the field events, indoor meetings only feature the high jump, pole vault, long jump, triple jump and shot put. The longer throws of javelin, hammer and discus are reserved for outdoor meetings, as there is normally not enough space in an indoor stadium to house these events.

Other events unique to indoor meets (especially in the United States) are the 300m, 600m, 1000m and 35 lb. weight throw. In some countries, notably Norway, standing long jump and standing high jump are also contested.

For multi-event athletes there is the Pentathlon for women (consisting of 60m hurdles, high jump, shot put, long jump and 800m) and heptathlon for men (consisting of 60m, long jump, shot put, high jump, 60m hurdles, pole vault and 1000m).

Outdoor track and field
The outdoor track and field season begins in the spring and may last through the summer. Usually the tracks are 400 meters, however, some old tracks are still measured in yards, so they measure 440 yards. The track consists of 6-10 lanes and for the bigger collegiate tracks, a steeplechase lane with a water pit. This can be inside or outside the track, making for a tighter turn or a wider turn. Often schools will place a field in the middle of the track, usually football/soccer/lacrosse, due to their size and shape. Recently these fields have been made out of astro turf or field turf instead of grass.

Field events consist of the high jump, pole vault, long jump, triple jump and shot put. They also consist of the javelin, hammer and discus throws; however, often these are outside of the stadium because they take up a large amount of space and may damage grass fields.


Events
There are other variations besides the ones listed below but races of unusual length (e.g. 300 m) are run much less often. With the exception of the mile run, races based on imperial distances are rarely run on the track anymore since most tracks have been converted from a quarter mile (402.3 m) to 400 meters; all recordkeeping for imperial distances has been discontinued.

Men and women do not compete against each other. Women generally run the same distances as men although hurdles and steeplechase barriers are lower and the weights of the shot, discus, javelin and hammer are less.

Track events - running events conducted on a 400 meter track. 
Sprints: events up to and including 400 m. Common events are 60 m (indoors only), 100 metres, 200 metres and 400 metres. 
Middle distance: events from 800 m to 3000 m, especially 800 metres, 1500 metres, mile and 3000 m. 
steeplechase - a race (usually 3000 m) in which runners must negotiate barriers and water jumps. 
Long distance: runs over 5000 m. Common events are 5000 m and 10000 m. 
Hurdling: 110 m high hurdles (100 m for women) and 400 m intermediate hurdles (300 m in high school). 
Relays: 4 x 100 metres relay, 4 x 400 metres relay, 4 x 200 m, 4 x 800 m, etc. Some events, such as medley relays, are rarely run except at large relay carnivals. 
Road running: conducted on open roads, but often finishing on the track. Common events are half-marathon and marathon. 
Race walking: usually conducted on open roads. Common events are 10 km, 20 km and 50 km. 
Field events 
Throwing events 
Shot put 
Hammer throw 
Javelin throw 
Discus throw 
Jumping events 
High jump 
Long jump 
Pole vault 
Triple jump 
Standing high jump 
Standing long jump 
Standing pole vault 
Standing triple jump 
Composite events 
Pentathlon 
Heptathlon 
Decathlon