Marathon Champions and records

Hailé Gebrseilassie of Ethiopia
World records were not officially recognized by the IAAF until January 1, 2004; previously, the best times for the marathon were referred to as the 'world best'. Courses must conform to IAAF standards for a record to be recognized. However, marathon routes still vary greatly in elevation, course, and surface, making exact comparisons impossible. Typically, the fastest times are set over relatively flat courses near sea level, during good weather conditions and with the assistance of pacesetters.
 
The world record time for men over the official IAAF distance is 2 hours 3 minutes and 59 seconds, set in the Berlin Marathon by Haile Gebrselassie of Ethiopia on September 28, 2008, an improvement of 51 minutes and 19 seconds since Johnny Hayes' gold medal performance at the 1908 Summer Olympics. Gebrselassie's world record represents an average pace of under 2:57 per kilometre (4:44 per mile), average speed of over 20.4 km/h (12.6 mph).
 
The world record for women was set by Paula Radcliffe of Great Britain in the London Marathon on April 13, 2003, in 2 hours 15 minutes and 25 seconds. This time was set using male pacesetters; the fastest time by a woman without using a male pacesetter ("woman-only") was also set by Paula Radcliffe, again during the London Marathon, with a time of 2 hours 17
minutes and 42 seconds, on April 17, 2005.
 
World all-time top ten lists

Men
Time
Athlete
Country
Date
Place
2h03:59
Haile Gebrselassie
 Ethiopia
28 September 2008
Berlin
2h04:27
Duncan Kibet
 Kenya
5 April 2009
Rotterdam
2h04:27
James Kwambai
 Kenya
5 April 2009
Rotterdam
2h04:48
Patrick Makau
 Kenya
11 April 2010
Rotterdam
2h04:55
Paul Tergat
 Kenya
28 September 2003
Berlin
2h04:55
Geoffrey Mutai
 Kenya
11 April 2010
Rotterdam
2h04:56
Sammy Korir
 Kenya
28 September 2003
Berlin
2h05:04
Abel Kirui
 Kenya
5 April 2009
Rotterdam
2h05:10
Samuel Wanjiru
 Kenya
26 April 2009
London
2h05:13
Vincent Kipruto
 Kenya
11 April 2010
Rotterdam

 

Women
Time
Athlete
Country
Date
Place
2h15:25
Paula Radcliffe
 Great Britain
13 April 2003
London
2h18:47
Catherine Ndereba
 Kenya
7 October 2001
Chicago
2h19:12
Mizuki Noguchi
 Japan
25 September 2005
Berlin
2h19:19
Irina Mikitenko
 Germany
28 September 2008
Berlin
2h19:36
Deena Kastor
 United States
23 April 2006
London
2h19:39
Sun Yingjie
 China
19 October 2003
Beijing
2h19:41
Yoko Shibui
 Japan
26 September 2004
Berlin
2h19:46
Naoko Takahashi
 Japan
30 September 2001
Berlin
2h19:51
Zhou Chunxiu
 China
12 March 2006
Seoul
2h20:42
Berhane Adere
 Ethiopia
22 October 2006
Chicago