Javelin, long jump, and triple jump are the three horizontal field events that use a runway approach rather than a throwing circle. Each involves a high-speed run-up followed by a precisely timed takeoff, but the rules governing valid attempts, measurement, and equipment differ substantially across the three events. This guide covers all three in detail, with practical examples and a comparison table to tie it all together.
Javelin: Rules and Specifications
The javelin throw is the only field event where the implement is launched overhand from a runway. It combines sprinting speed with upper-body coordination, and its rules are designed around the unique aerodynamic properties of the javelin itself.
Javelin Specifications
The javelin is a spear-shaped implement with a metal head, a shaft (usually aluminum, carbon fiber, or a composite), and a cord grip at the center of gravity. Specifications vary by age and gender:
| Division | Weight | Length |
|---|---|---|
| Men (Senior) | 800 g (1 lb 12.25 oz) | 2.60-2.70 m |
| Women (Senior) | 600 g (1 lb 5.16 oz) | 2.20-2.30 m |
| Boys High School | 800 g | 2.60-2.70 m |
| Girls High School | 600 g | 2.20-2.30 m |
Modern competition javelins are designed with the center of gravity shifted forward (toward the tip) to ensure the javelin descends nose-first. This design change was introduced by World Athletics in 1986 for men and 1999 for women to reduce throwing distances for safety reasons - older javelin designs could carry dangerously far into the infield of a stadium.
Runway and Scratch Line
The javelin runway is at least 30 m long (and often 33.5 m at championship facilities) and 4 m wide. At the end of the runway is a curved scratch line - a painted arc from which the throw is measured. The athlete must release the javelin before any part of their body touches or crosses the scratch line. After the throw, the athlete must exit behind the scratch line - walking forward past it results in a foul.
Valid Throw Criteria
For a javelin throw to be valid, three conditions must be met:
- The metal tip must strike the ground first. The javelin does not need to stick into the ground - it just needs to make initial contact with its metal head before any other part of the javelin touches the surface. A javelin that lands flat or tail-first is a foul.
- The javelin must land within the sector. The javelin sector is a 28.96deg angle (narrower than the 34.92deg sector used for shot put and discus), marked by two white lines extending from the scratch line's center point.
- The athlete must not cross the scratch line. Any part of the body or clothing touching the line or the ground beyond it before the javelin lands results in a foul.
The distance is measured from the front edge of the scratch line arc to the nearest point where the javelin's metal head struck the ground, along a line extending to the center of the arc.
Long Jump: Rules and Specifications
The long jump is conceptually the simplest field event - run fast and jump far - but its rules around the takeoff point and measurement are precise and strict.
Runway and Takeoff Board
The long jump runway is at least 40 m long and 1.22 m wide. At the end of the runway, flush with the surface, is the takeoff board: a wooden or synthetic plank that is 20 cm wide and extends the full width of the runway. Beyond the takeoff board is the plasticine indicator board - a strip of soft modeling clay (typically 10 cm wide) set slightly above the level of the takeoff board. If the athlete's shoe crosses the front edge of the takeoff board and touches the plasticine, it leaves a visible impression, confirming a foul. This system provides an objective, verifiable way to judge takeoff fouls.
The distance from the takeoff board to the near edge of the sand pit must be at least 1 m (and is typically between 1 m and 3 m at most facilities, adjusted based on the competition level). The sand landing pit must be at least 2.75 m wide and filled with soft, level sand to the level of the takeoff board.
Measurement
The jump distance is measured from the front edge of the takeoff board (not from where the athlete actually left the ground) to the nearest break in the sand made by any part of the athlete's body. This is a critical rule: if the athlete falls backward after landing, the mark is taken from the rearmost point contacted - which could cost significant distance. Athletes are coached to fall forward out of the landing pit to protect their mark.
All distances are measured in meters, rounded down to the nearest whole centimeter. A jump that measures 6.847 m is recorded as 6.84 m.
Wind Gauge Requirements
A calibrated anemometer is placed alongside the runway, measuring wind speed during the last 5 seconds before the athlete reaches the takeoff board (the gauge starts when the athlete passes a marker on the runway). The wind reading is recorded alongside the mark. For the mark to be eligible for records, the wind reading must not exceed +2.0 m/s. However, all marks count for competition purposes regardless of wind.
Triple Jump: Rules and Specifications
The triple jump is the most technically complex horizontal event. It consists of three connected phases - hop, step, and jump - each with specific rules about which foot the athlete must use.
The Three Phases
- Hop: The athlete takes off from the board and lands on the same foot they took off from. A right-footed jumper takes off on the right foot and lands on the right foot.
- Step: From the hop landing, the athlete immediately takes off again and lands on the opposite foot. Continuing the example, the athlete now lands on the left foot.
- Jump: From the step landing, the athlete takes off and lands in the sand pit on both feet (or any part of the body, as in long jump). Either foot may be used for the final takeoff - it is the landing in the pit that matters.
Using the wrong foot sequence results in a foul. Specifically, if the athlete lands the hop phase on the opposite foot from the takeoff, the attempt is invalid. Officials watch the foot contacts closely, and at championship meets, video replay may be used to verify the sequence.
Takeoff Board Placement
The triple jump uses the same runway and board setup as the long jump, but the takeoff board is placed farther from the sand pit to accommodate the additional distance covered during the hop and step phases. At the senior level, the board is typically 13 m from the near edge of the pit for men and 11 m for women. At the high school level, the board is often placed at 9-11 m depending on the ability of the athletes.
This distance is critical for safety and competition quality. If the board is too close, athletes may overshoot the pit. If it is too far, weaker athletes cannot reach the sand. Meet directors must survey the field and adjust the board placement based on the caliber of the competitors.
Measurement and Wind
Triple jump measurement follows the same rules as long jump: from the front edge of the takeoff board to the nearest break in the sand. The plasticine indicator board is used for foul detection. The wind gauge operates during the approach, measuring wind speed over the last 5 seconds - the same protocol used in long jump. Wind readings are recorded and subject to the same +2.0 m/s limit for record eligibility.
Common Fouls Across All Three Events
While each event has unique foul criteria, several fouls are shared:
- Overstepping the takeoff mark: In long jump and triple jump, any part of the foot past the front edge of the takeoff board is a foul. In javelin, any body part past the scratch line is a foul.
- Landing outside the designated area: The implement (javelin) or the athlete's body (jumps) must make first contact within the sector or landing pit.
- Exceeding the time limit: Athletes have 60 seconds from when their name is called to begin their attempt (90 seconds when only 3 or fewer athletes remain). Exceeding this time results in a foul.
- Improper exit: In javelin, the athlete must exit behind the scratch line. In the jumps, the athlete must leave the pit without walking back toward the takeoff board (which would create a mark closer to the board than the actual landing point).
- Assistance: Receiving physical assistance (e.g., being pulled out of the sand pit) before the mark is taken results in a foul.
In all three events, a foul is recorded as "F" on the results sheet. No mark is awarded, but the attempt counts against the athlete's total. An athlete who fouls all of their attempts finishes with NM (No Mark).
Side-by-Side Comparison
| Aspect | Javelin | Long Jump | Triple Jump |
|---|---|---|---|
| Runway length | ≥ 30 m (typically 33.5 m) | ≥ 40 m | ≥ 40 m |
| Takeoff mark | Curved scratch line (arc) | 20 cm board + plasticine | 20 cm board + plasticine |
| Sector/landing area | 28.96deg sector on grass | Sand pit (≥ 2.75 m wide) | Sand pit (≥ 2.75 m wide) |
| Board-to-pit distance | N/A | 1-3 m | 11-13 m (senior) |
| What is measured | Scratch line to nearest tip impact | Board to nearest sand break | Board to nearest sand break |
| Landing requirement | Metal tip must strike first | Any body part in sand | Any body part in sand |
| Foot sequence rule | None | None | Same foot -> opposite foot -> either foot |
| Wind gauge | Not standard (elite only) | Yes - 5-second window | Yes - 5-second window |
| Wind limit for records | N/A | +2.0 m/s | +2.0 m/s |
| Men's senior implement | 800 g, 2.60-2.70 m | N/A | N/A |
| Typical men's elite mark | 85-93 m | 8.00-8.70 m | 17.00-18.20 m |
| Typical women's elite mark | 62-70 m | 6.80-7.40 m | 14.50-15.60 m |
Practical Scenarios and Examples
Understanding the rules becomes easier through concrete examples:
Scenario 1: The Wind-Aided Long Jump
An athlete jumps 8.50 m with a wind reading of +2.4 m/s. This is an outstanding mark and it counts for competition purposes - the athlete wins if no one jumps farther. However, the mark carries a "w" notation and cannot be ratified as a national or world record. If the same athlete later jumps 8.42 m with +1.8 m/s wind, that second mark becomes their legal record-eligible best, even though the 8.50 m placed higher in the competition.
Scenario 2: Triple Jump Wrong-Foot Foul
A right-footed jumper takes off from the board on the right foot (correct), but during the hop phase, lands on the left foot instead of the right. This is an immediate foul because the hop must end on the same foot as the takeoff. The official raises a red flag, and no distance is measured. The athlete's remaining phases are irrelevant - the foul occurred at the hop landing.
Scenario 3: Javelin Flat Landing
An athlete delivers a powerful throw, but the javelin rotates excessively and lands flat on its side rather than tip-first. Despite the impressive distance, this is a foul. The javelin's metal head must be the first part to contact the ground. A throw where the tail hits first or the javelin lands parallel to the ground receives no mark.
Scenario 4: Long Jump Backward Fall
An athlete produces a massive jump, landing at 7.90 m from the board. But upon landing, they lose balance and fall backward, with their hand touching the sand at 7.65 m from the board. The measured distance is 7.65 m - the nearest break in the sand to the takeoff board - not the 7.90 m where their feet first touched. This illustrates why athletes train to fall forward out of the pit.
These three events reward speed, precision, and technical mastery in equal measure. Whether you are a coach designing practice plans, an athlete studying the rules, or a spectator trying to follow live results on FieldSync, knowing the specific requirements of each event deepens your appreciation for every mark that appears on the results board.