15K run
The 15K run is a long distance foot race. It is a rarely held race that is not recognized as an Olympic event. Both the world best for men and women were set at the Zevenheuvelenloop in Nijmegen, The Netherlands. The world best for men is held by Joshua Cheptegei of Uganda who ran a time of 41:05. The women's world best is held by Letesenbet Gidey of Ethiopia who ran a time of 44:20.
Between 1985 and 1991, the IAAF World Women's Road Race Championships was contested over the 15 km distance.
All-time top 25
- + = to longer performance
Men
- Correct as of September 2019.
| Rank | Time | Athlete | Nation | Date | Race | Place | Ref |
| 1 | 41:05 | Joshua Cheptegei | Uganda | 18 November 2018 | Zevenheuvelenloop | Nijmegen | |
| 1 | 41:05 | Geoffrey Kamworor | Kenya | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 3 | 41:13 | Leonard Komon | Kenya | 21 November 2010 | Zevenheuvelenloop | Nijmegen | |
| 4 | 41:22+ | Haile Gebrselassie | Ethiopia | 4 September 2005 | Tilburg | ||
| 5 | 41:29 | Felix Limo | Kenya | 11 January 2001 | Zevenheuvelenloop | Nijmegen | |
| 5 | 41:29+ | Samuel Wanjiru | Kenya | 9 February 2007 | Ras Al Khaimah Half Marathon | Ras Al Khaimah | |
| 5 | 41:29+ | Deriba Merga | Ethiopia | 20 February 2009 | Ras Al Khaimah Half Marathon | Ras Al Khaimah | |
| 8 | 41:30 | Patrick Makau | Kenya | 20 February 2009 | Ras Al Khaimah Half Marathon | Ras Al Khaimah | |
| 8 | 41:30 | Samuel Tsegay | Eritrea | 18 September 2011 | Amsterdam - Zaandam | ||
| 8 | 41:30 | Benard Kipkorir Ngeno | Kenya | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 11 | 41:31 | Edwin Kiprop Kiptoo | Kenya | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 11 | 41:31 | Amos Kurgat | Kenya | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 13 | 41:32 | James Mwangi Macharia | Kenya | 18 September 2016 | Copenhagen | ||
| 14 | 41:33 | Zersenay Tadese | Eritrea | 21 March 2010 | Lisbon Half Marathon | Lisbon | |
| 15 | 41:34 | Evans Cheruiyot | Kenya | 14 October 2007 | Udine | ||
| 15 | 41:34 | Berehanu Tsegu | Ethiopia | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 17 | 41:35+ | Wilson Kipsang Kiprotich | Kenya | 20 February 2009 | Ras Al Khaimah Half Marathon | Ras Al Khaimah | |
| 18 | 41:37+ | Abraham Kiptum | Kenya | 28 October 2018 | Valencia Half Marathon | Valencia | |
| 19 | 41:38 | Sileshi Sihine | Ethiopia | 21 November 2004 | Nijmegen | - | |
| 19 | 41:38a+ | Martin Irungu Mathathi | Kenya | 18 September 2011 | Newcastle-South Shields | - | |
| 19 | 41:38+ | Erick Kiptanui | Kenya | 8 April 2018 | Berlin Half Marathon | Berlin | |
| 22 | 41:40+ | Jemal Yimer | Ethiopia | 28 October 2018 | Valencia Half Marathon | Valencia | |
| 22 | 41:40+ | Abadi Hadis | Ethiopia | 28 October 2018 | Valencia Half Marathon | Valencia | |
| 24 | 41:41+ | Bitan Karoki | Kenya | 26 March 2016 | Cardiff | - | |
| 25 | 41:43+ | Alex Kibet | Kenya | 8 February 2018 | Ras Al Khaimah Half Marathon | Ras Al Khaimah |
Women
- Correct as of March 2020.
| Rank | Time | Athlete | Nation | Date | Race | Place | Ref |
| 1 | 44:20 | Letesenbet Gidey | Ethiopia | 17 November 2019 | Zevenheuvelenloop | Nijmegen | |
| 2 | 45:37+ | Joyciline Jepkosgei | Kenya | 1 April 2017 | Prague Half Marathon | Prague | |
| 3 | 45:40+ | Violah Jepchumba | Kenya | 1 April 2017 | Prague Half Marathon | Prague | |
| 4 | 45:40 | Brigid Kosgei | Kenya | 21 February 2020 | Ras Al Khaimah Half Marathon | Emirate of Ras Al Khaimah | |
| 5 | 45:41 | Ababel Yeshaneh | Ethiopia | 21 February 2020 | Ras Al Khaimah Half Marathon | Emirate of Ras Al Khaimah | |
| 6 | 45:54+ | Joan Chelimo | Kenya | 7 April 2018 | Prague Half Marathon | Prague | |
| 7 | 45:57+ | Fancy Chemutai | Kenya | 22 October 2017 | Valencia | ||
| 8 | 46:08+ | Caroline Chepkoech | Kenya | 8 February 2018 | Ras Al Khaimah Half Marathon | Ras Al-Khaimah | |
| 8 | 46:08+ | Mary Keitany | Kenya | 8 February 2018 | Ras Al Khaimah Half Marathon | Ras Al-Khaimah | |
| 10 | 46:09+ | Sifan Hassan | Netherlands | 16 September 2018 | Copenhagen Half Marathon | Copenhagen | |
| 11 | 46:13 | Florence Kiplagat | Kenya | 15 February 2015 | Barcelona Half Marathon | Barcelona | |
| 11 | 46:13 | Evaline Chirchir | Kenya | 21 February 2020 | Ras Al Khaimah Half Marathon | Emirate of Ras Al Khaimah | |
| 13 | 46:14 | Rosemary Wanjiru | Kenya | 21 February 2020 | Ras Al Khaimah Half Marathon | Emirate of Ras Al Khaimah | |
| 14 | 46:16 | Senbere Teferi | Ethiopia | 27 October 2019 | Valencia Half Marathon | Valencia | |
| 15 | 46:24 | Yalemzerf Yelahun Densa | Ethiopia | 21 February 2020 | Ras Al Khaimah Half Marathon | Emirate of Ras Al Khaimah | |
| 16 | 46:28 | Tirunesh Dibaba | Ethiopia | 15 November 2009 | Zevenheuvelenloop | Nijmegen | |
| 17 | 46:32+ | Peres Jepchirchir | Kenya | 10 February 2017 | Ras Al Khaimah Half Marathon | Ras Al-Khaimah | |
| 18 | 46:34+ | Worknesh Degefa | - | ||||
| 19 | 46:41+ | Paula Radcliffe | - | ||||
| 20 | 46:49+ | Joyce Chepkirui | - | ||||
| 20 | 46:49+ | Zeineba Yimer | Ethiopia | 16 September 2018 | Copenhagen Half Marathon | Copenhagen | |
| 22 | 46:55 | Kayoko Fukushi | - | ||||
| 22 | 46:55 | Birhane Dibaba | Ethiopia | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 22 | 46:55 | Dorcas Jepchirchir Tuitoek | Kenya | 15 September 2019 | Copenhagen Half Marathon | Copenhagen | |
| 25 | 46:57 | Elana Meyer | - | ||||
| 25 | 46:57 | Mestawat Tufa |