# 100 m sprint contest

> Your fastest 100 m on a marked running track, filmed in one take with the start and the finish line in view. The clock starts on your first movement and stops when your torso crosses the line, and the time is ranked on your gym, city, country and world boards.

URL: https://opencontest.app/contests/sprint-100m/

Contest: 100 m sprint. Winner: fastest time.

## What counts

- A 100 m straight on a running track, using the painted start and finish lines.
- A standing, crouch or block start.
- The clock starts on your first movement out of the start position.
- The clock stops when your torso crosses the finish line.

## What doesn’t count

- Roads, parks or a distance measured with a phone or watch.
- A rolling or walking start.
- Running outside your lane or cutting the line.

## How to film it

- Put the phone on a stand beside the track, level with the finish line and angled back down the straight.
- Check that the start line and the finish line are both in frame before you walk down.
- Start recording, walk to the start, then set and go when you are ready.

Most people have a 100 m time from school sports day and no idea how it stands up now. This contest gives you a fair way to find out, with a marked track and one camera that sees both ends.

## How it works

Set your phone on a stand beside the finish line, angled back so the start is visible down the straight. Start recording, walk to the start line and get set. Go when you are ready. The app starts the clock on your first movement and stops it when your torso crosses the finish line, so you see your time as soon as you are done.

Your time goes on every board you qualify for: your gym, your city, your country and the world, with brackets for age group and sex. A veteran running 14 seconds can rank near the top of their age group on the same day a junior chases a city record.

## Who checks the time

The automatic check confirms the video is unbroken and times the run. Anyone can flag a take, for example if the start looks early or the line is hidden. Every take in a top 10, and every new record, goes to a referee who steps through the start and the finish frame by frame. If the time changes you see why, and you can appeal to a different referee.

## Getting faster

Sprint speed comes from short, full efforts with long rests. Try runs of 20 to 40 m at full speed with two or three minutes between them, twice a week. Warm up properly first, as cold hamstrings are easy to strain. Practise your start, and test the full 100 m every few weeks.

## Questions

### Is this the same as an electronically timed race?

No. The time is taken from the video, from first movement to the finish, so it is not the same as a reaction-timed race result. Everyone on the board is timed the same way.

### Do spikes count?

Yes. Running spikes and starting blocks are both allowed.

### What about wind?

There is no wind reading. A strong tail wind helps, so if you are going for a record, choose a still day.