What is a false start in speed climbing?
B · Beginner · The race · 2 of 3A climber's foot rests on a pressure pad at the start. If the pad is released less than 0.100 seconds after the starting signal, or before it, the start is a false start. In a knockout race the false starter loses. In qualification the run is recorded as a false start.
How it works
- Assembly: once clipped to the auto-belay, the climber stands up to 2 m in front of the wall, facing away.
- "At your marks": the climber takes position with both hands and one foot on starting holds, and "one foot on the starting pad".
- "Ready": announced once all climbers are motionless.
- The signal: a start light with an audible tone from the timing system.
- Reaction time: from the signal to the force on the pad falling below the timer's threshold.
- The limit: "A start will be judged invalid" if the reaction time "is less than 0.100s".
- In the final: the starter stops the race, with visual and audio signals.
- In qualification: the race continues without a recall, and the result is recorded. Only a visual signal is shown.
- Not ready: a climber may raise a hand before "Ready" and both return to the assembly position.
- Delay: a climber who causes undue delay or disturbs the other is given a yellow card.
- No appeal: the validity of a reaction time cannot be appealed where an approved timing system is in use.
The glossary has the false start, the reaction time, the starting signal (speed) entry, speed climbing, the bracket and the caution and disqualification entry.
Tricky cases
A climber leaves the pad 0.095 seconds after the signal. Is that a false start?
Yes. Any reaction time under 0.100 seconds is a false start.
One climber false starts in a quarter-final. Does the other have to climb?
The starter stops the race, and the climber who did not false start is the winner.
Both climbers false start in the same knockout race. Who goes through?
Neither yet. The race is re-run.
A climber false starts on their first qualification run. Are they out?
No. That run is recorded as a false start and they still have their run on the other lane.
Why the rule exists
Nobody can react to a sound in under a tenth of a second, so a quicker release means the climber guessed. With races won by hundredths, a guessed start would decide them. Athletics uses the same figure for the same reason.
Where it differs
| Where | What changes | Source |
|---|---|---|
| Qualification | Race continues; result recorded as a false start | WC Event Regulations, Annex B 5.1 (A) |
| Final bracket | Race stopped; the other climber wins | WC Event Regulations, Annex B 5.1 (B); 6.2 |
| Both false start | Re-run | WC Event Regulations, Annex B 6.3 |
| Boulder | A false start means a wrong starting position, not an early one | WC Competition Rules 7.5 |
From the rule book
World Climbing, Competition Rules (version 3, January 2026), Rules 7.2 and 7.3 with the glossary; World Climbing, Event Regulations (version 3, January 2026), Annex B sections 4, 5, 6 and 10. Checked 14 October 2026. Official documents: World Climbing Competition Rules, January 2026 (PDF) and World Climbing Event Regulations, January 2026 (PDF).