What are time of flight and horizontal displacement in trampoline?
I · Intermediate · The exercise and the score · 3 of 7Two measured marks. Time of flight is the total time the gymnast spends in the air over the ten elements, in seconds, added straight to the score. Horizontal displacement starts at 10 and loses up to 0.3 for each landing, by how far from the centre of the bed it is.
How it works
- Time of flight: "the sum of the times of flight for each element, rounded down to 1/100".
- Typical size: the code's own examples are 16.23, 17.19 and 17.45.
- Only the air: time spent in the bed is not counted.
- Displacement: each landing is placed in a zone on the bed, with a deduction of "0.0 - 0.3 pts".
- From 10: the deductions for each element are subtracted from a maximum of 10.0.
- Feet: for a landing on the feet, the zone is where any part of a foot lands.
- Front, back or seat: the hip is used to decide where the body landed.
- Electronic: both are measured by devices controlled by the chair of the judges' panel.
- Back-up: without the device, two of the execution judges mark displacement from video.
- A shorter exercise: if the exercise is interrupted, the maximum displacement mark is cut to the number of valid elements.
The glossary has the time of flight, the horizontal displacement, the trampoline scoring entry, the bounce and the Chair of Judges Panel.
Tricky cases
Does an exercise of easy skills done very high beat a hard one done low?
It can gain on the T mark, but it gives up difficulty. The four marks are added, so neither wins alone.
A gymnast lands with one foot on the line of the centre box. Is that a deduction?
No, as far as the wording goes: the deduction applies when a foot lands visibly outside the outer line of a zone.
Is time of flight used in synchronised trampoline?
No. The synchronised score replaces it with a synchronisation mark.
What are the exact zones and their deductions?
They are in a drawing in the code's appendix that the text copy does not carry. The text gives only the range, 0.0 to 0.3 for each element.
Why the rule exists
Height and position used to be matters of judges' impression. Measuring them rewards what makes trampolining hard to do well: keeping every bounce high through ten elements and coming down each time where you took off. A gymnast who drifts is also nearer the springs and frame.
Where it differs
| Where | What changes | Source |
|---|---|---|
| Individual | Time of flight added to the score | FIG TRA 17.2.9.1 |
| Synchronised | No time of flight. Both gymnasts' displacement averaged | FIG TRA 17.2.4.2; FIG TRA 17.2.9.2 |
| Juniors, first exercise | Only execution, displacement and time of flight count | FIG TRA 4.1.1 |
| Tumbling and double mini | Neither mark is used | FIG TUM 16.2.6; FIG DMT 16.2.6 |
From the rule book
Fédération Internationale de Gymnastique, Code of Points 2025-2028, Trampoline Gymnastics, Trampoline, articles 17.2.4, 17.2.5 and 22 and appendix M. Checked 14 October 2026. Official document: 2025-2028 Code of Points, Trampoline Gymnastics (PDF).