How does a cycling time trial work?
B · Beginner · Time trials · 4 of 6Riders set off one at a time at equal intervals and ride the same course alone. The fastest time wins. Each rider starts from a standstill, held upright and released without a push, on the timekeeper's countdown. A rider who turns up late is timed from the moment they were due to start.
How it works
- One at a time: "Riders shall set off at identical intervals." The interval may be longer between the last starters.
- The order: set by the organiser on objective criteria. At the Olympic Games and world championships the UCI sets it.
- Bike check: every rider must present the bike at the check area at least 10 minutes before their start time and pass it.
- The start: "from a stationary position". The rider is "held and then released, without being pushed, by a holder", the same holder for everyone.
- The ramp: used at the events marked for it.
- The countdown: by the timekeeper-commissaire. Timing starts at the end of it.
- Electronic start: if the front tyre triggers the timing strip a fraction early or within five seconds after zero, that moment is used.
- Late: "The time of any rider who reports late to the start shall be calculated from that rider's scheduled starting time."
- Timing: to at least a tenth of a second, and to a hundredth at WorldTour events, world championships and the Olympic Games.
- On the course: the distance remaining is shown at least every 5 kilometres. Intermediate times are taken along the way.
- Alone: "Riders may not help one another."
- The car: a following vehicle carries spare wheels or a bike and stays at least 25 metres behind.
The glossary has the time trial, aero bars, draft and the prologue.
Tricky cases
A rider arrives at the ramp 20 seconds late. Do they lose 20 seconds?
Yes.
Can the holder give a small push?
No. The rider is released without being pushed.
Two riders finish with the same time to the tenth. Is it a tie?
It depends on the event. At the top events times are taken to a hundredth of a second, which usually separates them. The article read does not say what happens if they are still level.
Can a rider use the special handlebars with forearm rests?
Yes, in a time trial. Resting the forearms is allowed only on fixed time trial extensions. The bike itself is governed by Part 1, which was not read.
Why the rule exists
In a road race a rider can hide in the bunch. The time trial removes the bunch, so the result is the rider's own effort against the clock, which is why it is called the race of truth. Starting everyone the same way, with the same holder, takes away the one moment where a helper could add speed.
Where it differs
| Where | What changes | Source |
|---|---|---|
| A stand-alone time trial | Order set by the organiser | UCI 2.4.006 |
| A time trial stage | Reverse order of the general classification, so the leader goes last | UCI 2.6.023 |
| Olympic Games and world championships | Order set by the UCI, timing to a hundredth | UCI 2.4.009; UCI 2.4.016 |
| A prologue | No more than 8 km, at the start of a stage race | UCI 2.6.006 |
From the rule book
Union Cycliste Internationale, Cycling Regulations, Part 2: Road Races (2026 edition, amendments to 1 July 2026), articles 2.2.025 and 2.4.001 to 2.4.029. Checked 14 October 2026. Official document: UCI Cycling Regulations, Part 2 (PDF).