400m freestyle is a sport compete with the time it takes to swim the 400m.
Video, is a state of men's 400m freestyle final at the 2008 Beijing Olympics.
Regulations commentary seen in 5 minutes
The competition area
- 504 m pool swim round trip.
- 1Is performed in eight human race.
Start
- Take the starting blocks at the whistle.
- Gun after the starting signal will be; "(provided by Take Your Marks) Take Your Marks".
- Until the gun had to be stationary from "Take Your Marks", will be disqualified if moved.
Stroke
- There is no provision how to swim.
- To go to somewhere other than their own lane, to touch the rope course, you can walk or kicking the bottom of the pool is not allowed.
- And after the turn after the start, since the 15m from the wall, you must be out on the water surface is part of the body.
Finish
- 400will finish when you touch the wall of the pool swimming in the m.
The road to gold medal
- We will proceed with the final qualifying →.
- In qualifying, the top eight will advance to the finals.
World Record / Japanese record
400m free form
| Record | Name | Date | |
|---|---|---|---|
World | 3:40"07 | Paul Bideruman ( | 2009/07/26 |
World | 3:59"15 | Federica Pellegrini ( | 2009/07/26 |
| Japan | 3:44"99 | Takeshi Matsuda Chi | 2008/08/09 |
| Japan | 4:05"19 | Shibata Ami clothing | 2007/03/25 |