Marathon world best progression

**Men**
Time	Runner	Place	Date
2:55:18.4	John Hayes (USA)	Shepherd's Bush	July 24, 1908
2:52:45.4	Robert Fowler (USA)	Yonkers, USA	January 1, 1909
2:46:52.6	James Clark (USA)	New York, USA	February 12, 1909
2:46:04.6	Albert Raines (USA)	New York,USA	May 8, 1909
2:42:31	Frederick Barrett (Great Britain)	Shepherd's Bush	February 12, 1909
2:38:16.2	Harry Green (Great Britain)
2:36:06.6	Alexis Ahlgren (Sweden)	Shepherd's Bush	May 31, 1913
2:32:35:8	Johnannes Kolehmainen (Finland)	Antwerp, Belgium	August 20, 1920
2:29:01.8	Albert Michelsen (USA)	Port Chester	October 13, 1925
2:27:49	Fusashige Suzuki (Japan)	Tokyo, Japan	March 31, 1935
2:26:44	Yasuo Ikenaka (Japan)	Tokyo, Japan	April 3, 1935
2:26:42	Kitei Son (Japan)	Tokyo, Japan	November 3, 1935
2:25:39	Yon Bok Suh (Korea)	Boston, USA	April 19, 1947
2:20:42.2	James Peters (Great Britain)	Chiswick, England	July 14, 1952
2:18:40.2	James Peters (Great Britain)	Chiswick, England	July 13, 1953
2:18:34.8	James Peters (Great Britain)	Turku, Finland	October 4, 1953
2:17:39.4	James Peters (Great Britain)	Chiswick, England	July 26, 1954
2:15:17	Sergey Popov (Soviet Union)	Stockholm, Sweden	August 24, 1958
2:15:16.2	Abebe Bikila (Ethiopia)	Rome, Italy	September 10, 1960
2:15:15.8	Toru Terasawa (Japan)	Beppu, Japan	Feburary 17, 1963
2:14:28	Leonard Edelen (USA)	Chiswick, England	July 15, 1963
2:13:55.4	Basil Heatley (Great Britain)	Chiswick, England	July 13, 1964
2:04:55	Paul Tergat (Kenya)	Berlin, Germany	September 28, 2003

Women
Time Runner Place Date

3:27:45 Dale Greig (GBR) Ryde May 23, 1964

3:19:33 Mildred Sampson (NZL) Auckland July 21, 1964