The following table shows the World Record Progression in the Men's 50 km Walk , as recognised by the IAAF. [1]
The 3:35:29 by Russia's Denis Nizhegorodov set in Cheboksary on June 13, 2004 was not ratified by the IAAF as a World Record because no EPO test was carried out afterwards.
This list is a chronological progression of record times for the marathon. World records in the marathon are now ratified by World Athletics, the international governing body for the sport of athletics.
The 100 metres, or 100-meter dash, is a sprint race in track and field competitions. The shortest common outdoor running distance, the 100-meter (109.36 yd) dash is one of the most popular and prestigious events in the sport of athletics. It has been contested at the Summer Olympics since 1896 for men and since 1928 for women. The inaugural World Championships were in 1983.
The official world records in the 5000 metres are held by Joshua Cheptegei with 12:35.36 for men and Letesenbet Gidey with 14:06.62 for women.