Guide
Race start types: mass, wave and individual starts—and how timing works
· 6 min read
In short
- In a mass start, everyone starts together. In a wave start, groups such as categories or pace waves start at intervals. In an individual start, competitors generally start one at a time at set intervals.
- Gun time and net time, also known as chip time, differ when a competitor crosses the start line after the starting signal. The rules must clearly state which time is official.
- In a wave start, the overall ranking of competitors from different waves is usually based on elapsed time, not on who crosses the finish line first. The event regulations determine the exact rule.
- The timing software must support the chosen start type: each start has its own time, and competitors from different waves do not share the same starting time.
The type of start affects how the finish unfolds, how rankings are calculated and what the timing system must do. It is one of the first decisions to make when planning an event.
Mass start
All competitors start together on a signal. This is the simplest format and the most exciting for spectators, but large fields can become congested at the start and over the first few kilometres. Results can use either gun time or chip time measured from when each competitor crosses the start line. Elite rankings are usually based on gun time, while chip time is often also provided for the rest of the field. Set the rule in advance and include it in the event regulations.
Wave start
Competitors are divided into waves by category or expected pace, and the waves start at intervals. This reduces congestion, makes finish-line arrivals easier to manage and helps organisers handle aid stations more effectively. Each competitor’s time is measured from the start of their wave. Overall rankings compare elapsed times rather than finishing moments: a competitor from a later wave can rank ahead of someone from an earlier wave despite crossing the finish line later.
Individual start
Competitors generally start one at a time at set intervals, with each racing against the clock. This format is used in cycling time trials, enduro, mountain races and rallying. The article Tour de France: how race timing works explains how it works at the Tour de France. With an individual start, each competitor is timed from their own starting time, requiring timing at both the start and the finish. In motorsport, these are special stages; learn more in Race timing in enduro.
What this means for race timing
The software must know when each wave or competitor starts and calculate times accordingly. For an individual start, it must record every competitor’s starting time; a mass start requires only one signal. The worst mistake is failing to record the start: without backup records such as video or a second device, the time can only be reconstructed by estimation. The start should therefore always be recorded. The most common race-timing mistakes explains these errors and how to prevent them.
Which type should you choose?
A mass start is sufficient for smaller running races with up to a few dozen competitors. For fields numbering in the hundreds, consider waves. Choose an individual start for time trials and enduro. You can find the complete selection process in How to choose a timing system for your event.
All three in one application
TAQIO supports mass, wave and individual starts. For individual starts, a competitor can be found in the list and their start recorded with one tap, which is especially useful for fields with dozens or even hundreds of starters. Try it free for up to 5 participants per event.
Frequently asked questions
What is the difference between gun time and chip time?
Gun time is measured from the starting signal, while chip time begins when the competitor crosses the start line. In large fields, a competitor may not reach the start line until several seconds or minutes after the signal, so chip time is fairer to those starting farther back.
Why are wave starts used?
They reduce congestion on the course and at the finish by allowing fewer people onto the course at once. Waves are formed by category or expected pace.
When is an individual start used?
It is used in cycling time trials, enduro and mountain races, rallying, and any event in which competitors race against the clock rather than directly against one another.
How are overall standings calculated with a wave start?
They are usually based on each competitor’s elapsed time from the start of their wave to the finish, unless the event regulations state otherwise. A competitor from a later wave can therefore rank ahead of someone from an earlier wave despite crossing the finish line later.