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  2. Milliradian - Wikipedia

    en.wikipedia.org/wiki/Milliradian

    In other words, 1 cm at 100 meters, 2.25 cm at 225 meters, 0.5 cm at 50 meters, etc. See the table below Range ... since there are 36 inches in one yard.

  3. World record progression 50 metres freestyle - Wikipedia

    en.wikipedia.org/wiki/World_record_progression...

    The first world record in the men's 50 metres freestyle in long course (50 metres) swimming was recognized by the International Swimming Federation (FINA) in 1976.In short course (25 metres) swimming events the world's governing body recognizes world records since March 3, 1991.

  4. List of world records in masters athletics - Wikipedia

    en.wikipedia.org/wiki/List_of_world_records_in...

    Masters athletics is a class of the sport of athletics for athletes of over 35 years of age. The events include track and field, road running and cross country running.These are the current world records in various five-year-groups, maintained by WMA, the World Association of Masters Athletes, which is designated by the World Athletics (formerly IAAF) to conduct the worldwide sport of Masters ...

  5. 50 metres - Wikipedia

    en.wikipedia.org/wiki/50_metres

    50 metres, or 50-meter dash, is a sprint event in track and field. It is a relatively uncommon non-championship event for indoor track and field, normally dominated by the best outdoor 100 metres runners. At outdoor athletics competitions it is used in the Special Olympics and a rare distance, at least for senior athletes.

  6. List of world records in swimming - Wikipedia

    en.wikipedia.org/wiki/List_of_world_records_in...

    Records can be set in long course (50 metres) or short course (25 metres) swimming pools. World Aquatics recognizes world records in the following events for both men and women, [ 1 ] [ 2 ] except for the mixed relays, where teams consist of two men and two women, in any order.

  7. Freestyle swimming - Wikipedia

    en.wikipedia.org/wiki/Freestyle_swimming

    Freestyle races are the most common of all swimming competitions, with distances beginning with 50 meters (55 yards) and reaching 1,500 meters (1,600 yards), [2] also known as the mile. The term 'freestyle stroke' is sometimes used as a synonym for ' front crawl ', [ 3 ] as front crawl is the fastest surface swimming stroke. [ 4 ]

  8. Swimming at the 2020 Summer Olympics – Men's 50 metre ...

    en.wikipedia.org/wiki/Swimming_at_the_2020_Summer...

    The men's 50 metre freestyle event at the 2020 Summer Olympics was held from 30 July to 1 August 2021 at the Tokyo Aquatics Centre. [1] It was the event's tenth appearance, first held in 1904 (as 50 yards) and then at every edition since 1988. The event is nicknamed the "splash and dash" event. [2]

  9. World record progression 50 metres butterfly - Wikipedia

    en.wikipedia.org/wiki/World_record_progression...

    This is a history of the progression of the World Record for the swimming event: the 50 butterfly. It is a listing of the fastest-time-ever in the event, in both long course (50m) and short course (25m) swimming pool. These records are maintained/recognized by FINA, [1] which oversees international competitive swimming and Aquatics.