General terms
Track
The running surface of a stadium. A standard track is a 400-metre oval with two straights and two bends, divided into numbered lanes.
Field
The infield and surrounding areas used for jumping and throwing events.
Heat
A qualifying race. When too many athletes enter an event to race together, they are split into heats and the best finishers move on to the next round.
Lane
The marked strip on the track assigned to each runner, especially important in sprints and relays.
PB and SB
PB is an athlete's personal best, their best ever result in an event. SB is their season's best, their best result in the current season.
Meet
An organised athletics competition featuring multiple events.
Track events
Sprint
A short, fast race (typically 100m, 200m or 400m) run at maximum effort.
Middle-distance
Races like 800m and 1500m requiring a mix of speed and endurance.
Long-distance
Races such as the 5000m and 10,000m on the track, and road races such as the marathon. They depend on stamina more than speed.
Hurdles
A sprint event in which runners clear a series of hurdles on the track. The hurdles are built to tip over, and knocking one down does not by itself disqualify a runner.
Steeplechase
A distance race over hurdles and a water jump. The 3000m steeplechase has 28 hurdle jumps and seven water jumps.
Relay
A team race in which each runner covers one leg and hands a baton to the next. In the best-known relays, the 4 × 100m and the 4 × 400m, four runners run one leg each.
Baton
The short tube handed from runner to runner in a relay. It must be passed inside the takeover zone. Passing it outside means the team is disqualified.
False start
When an athlete starts before the starting gun is fired. The athlete responsible is disqualified, except in combined events, which have their own rule.
Photo finish
A very close finish decided by reviewing a high-speed camera image to determine the exact order of finishers.
Takeover zone
The marked stretch of track in which the baton must be passed. Under World Athletics rules it is 30m long in the 4 × 100m and 20m long in the 4 × 400m and longer relays.
Anchor
The last runner in a relay team, or that runner's leg.
Bell lap
The last lap of a distance race. A bell is rung as the leader starts it.
Staggered start
In a race run partly or wholly in lanes around a bend, athletes start from different points so that each covers the same distance. Without the stagger, the outer lanes would run further.
Road events and race walking
Marathon
A road race of 42.195 km, about 26.2 miles.
Half marathon
A road race of half the marathon distance, 21.0975 km.
Road race
A race run on public roads, not on a track. The marathon and the half marathon are the best known.
Race walking
A race in which athletes must walk, not run. One foot must stay in contact with the ground, as seen by the human eye, and the advancing leg must be straight from first contact until it is upright.
Jumping events
Long jump
An event where athletes sprint down a runway and jump as far as possible into a sand pit.
Triple jump
Similar to long jump, but involves a hop, a step and a jump in sequence before landing in the pit.
High jump
An event where athletes run up and jump over a horizontal bar, landing on a cushioned mat, without knocking the bar down.
Pole vault
An event where athletes use a flexible pole to launch themselves over a raised bar.
Runway
The straight track athletes sprint down before jumping in long jump, triple jump or pole vault.
Take-off board
The board at the end of the runway that jumpers take off from. In the long jump and triple jump, an athlete who breaks the vertical plane of the take-off line with any front part of the foot has committed a foul, even when running up without jumping.
Trial
One attempt in a field event. Under World Athletics rules, when more than eight athletes enter a jump or throw, each gets three trials and the eight with the best valid marks get three more. With eight or fewer, each gets six. Competition rules can change this. The high jump and pole vault work differently.
Three consecutive failures
In the high jump and pole vault, three failed trials in a row, at any heights, end an athlete's competition. The exception is a tie for first place.
Throwing events
Shot put
An event in which athletes put, not throw, a heavy metal ball as far as they can from a marked circle. The shot is put from the shoulder with one hand only.
Discus
An event where athletes spin and throw a flat, disc-shaped object for distance.
Javelin
An event where athletes run and throw a long spear-like implement as far as possible.
Hammer throw
An event where athletes spin and release a heavy metal ball attached to a wire and handle, throwing it for distance.
Sector
The marked, pie-shaped landing zone throws must land within to count.
Foul
An invalid attempt in a jump or throw, such as breaking the take-off line in a jump or touching the ground outside the circle in a throw. It does not count.
Throwing circle
The marked circle that shot putters, discus throwers and hammer throwers throw from. A thrower must be stationary inside it, with both feet on the ground inside the circle, before starting a trial.
Combined events
Decathlon
A combined event of 10 events over two days. The men's order is the 100m, long jump, shot put, high jump and 400m on day one, then the 110m hurdles, discus, pole vault, javelin and 1500m on day two. World Athletics rules also provide for a women's decathlon.
Heptathlon
A combined event for women of seven events over two days: the 100m hurdles, high jump, shot put and 200m on day one, then the long jump, javelin and 800m on day two. Indoors, men compete in a heptathlon too, with different events.
Pentathlon
A combined event of five events held on one day. Indoors, women compete in a pentathlon of 60m hurdles, high jump, shot put, long jump and 800m, and men in one of 60m hurdles, long jump, shot put, high jump and 1000m.
Officiating and results
Disqualification
Removal from an event for a rule violation, such as a false start or lane violation.
World record
The best performance ever recorded in an event. It counts as a record only once World Athletics ratifies it, which can be refused, for example when the wind helped too much.
Wind-assisted
A performance helped by a following wind of more than 2 metres per second, so it cannot be ratified as a record. The limit applies where wind is measured: the sprints up to 200m, the sprint hurdles, the long jump and the triple jump.
Qualifying standard
A minimum performance level athletes must achieve to be eligible for certain competitions, like the Olympics.
Olympic record
The best performance ever recorded in an event at the Olympic Games.
National record
The best performance in an event by an athlete from one country.
Q and q
Marks in results for athletes who go through. On the track, Q means qualified by place and q means qualified by time. In field events, Q means qualified by standard and q means qualified by performance.