Letsrun claims women's half marathon table adjustment seems odd considering equivalent improvements in marathon since 2017. However, what they did notice is that there have been way more recent improvements in the half marathon outside of the top 30. The scoring tables are based on deaper performances than the top performances. Lets look at performances within 6 minutes of the marathon and 3 minutes of the half marathon world records. Of the 68 half marathon performances at 65:52 or faster, only 4 (6%) were run before 2017 (11 before 2018). Of the 88 marthons at 20:04 or faster, 28 (32%) were before 2017 (32 before 2018). The big difference comes from the fact that women have been running 2:19 marathons, consistently, for awhile now, yet very few women have been running 65 min half marathons until recently. Below are the data. Note I am looking at multiple performances by ahtlete. The reason for this, is that if you only look at the top performance per athlete you lose a lot of early performances by top athletes as athletes tend to improve.
So it makes that the half marathon tables got a big adjustment while the marathon tables didn't, 94% of times within 3 min of the world record have been run from 2017 onwards, whereas only 68% of marathon times withing 6 min of the world record have been run from 2017 onwards. That's a huge difference.
Marathon
- 2:14:04 Brigid KOSGEI Chicago, IL (USA) 13 Oct 2019 1295
- 2:15:25 Paula RADCLIFFE London (GBR) 13 Apr 2003 1281
- 2:16:02 Brigid KOSGEI Tokyo (JPN) 06 Mar 2022 1274
- 2:17:01 Mary Jepkosgei KEITANY London (GBR) 23 Apr 2017 1264
- 2:17:08 Ruth CHEPNGETICH Dubai (UAE) 25 Jan 2019 1263
- 2:17:16 Peres JEPCHIRCHIR Valencia (ESP) 06 Dec 2020 1262
- 2:17:18 Paula RADCLIFFE Chicago, IL (USA) 13 Oct 2002 1261
- 2:17:18 Ruth CHEPNGETICH Nagoya (JPN) 13 Mar 2022 1261
- 2:17:23 Yalemzerf YEHUALAW Hamburg (GER) 24 Apr 2022 1260
- 2:17:41 Worknesh DEGEFA Dubai (UAE) 25 Jan 2019 1257
- 2:17:42 Paula RADCLIFFE London (GBR) 17 Apr 2005 1257
- 2:17:43 Joyciline JEPKOSGEI London (GBR) 03 Oct 2021 1257
- 2:17:45 Lonah Chemtai SALPETER Tokyo (JPN) 01 Mar 2020 1257
- 2:17:56 Tirunesh DIBABA London (GBR) 23 Apr 2017 1255
- 2:17:57 Angela TANUI Amsterdam (NED) 17 Oct 2021 1254
- 2:17:58 Degitu AZIMERAW London (GBR) 03 Oct 2021 1254
- 2:17:58 Ashete BEKERE Tokyo (JPN) 06 Mar 2022 1254
- 2:18:04 Joan Chelimo MELLY Seoul (KOR) 17 Apr 2022 1253
- 2:18:11 Gladys CHERONO Berlin (GER) 16 Sep 2018 1252
- 2:18:12 Sutume Asefa KEBEDE Seoul (KOR) 17 Apr 2022 1252
- 2:18:18 Ashete BEKERE London (GBR) 03 Oct 2021 1251
- 2:18:18 Gotytom GEBRESLASE Tokyo (JPN) 06 Mar 2022 1251
- 2:18:20 Brigid KOSGEI London (GBR) 28 Apr 2019 1250
- 2:18:30 Roza DEREJE Valencia (ESP) 01 Dec 2019 1249
- 2:18:31 Tirunesh DIBABA Chicago, IL (USA) 08 Oct 2017 1249
- 2:18:31 Vivian Jepkemoi CHERUIYOT London (GBR) 22 Apr 2018 1249
- 2:18:33 Azmera ABREHA Valencia (ESP) 01 Dec 2019 1248
- 2:18:34 Ruti AGA Berlin (GER) 16 Sep 2018 1248
- 2:18:35 Brigid KOSGEI Chicago, IL (USA) 07 Oct 2018 1248
- 2:18:35 Ruth CHEPNGETICH Istanbul (TUR) 11 Nov 2018 1248
- 2:18:35 Birhane DIBABA Tokyo (JPN) 01 Mar 2020 1248
- 2:18:37 Mary Jepkosgei KEITANY London (GBR) 22 Apr 2012 1248
- 2:18:40 Joyciline JEPKOSGEI Valencia (ESP) 06 Dec 2020 1247
- 2:18:40 Brigid KOSGEI London (GBR) 03 Oct 2021 1247
- 2:18:42 Angela TANUI Tokyo (JPN) 06 Mar 2022 1247
- 2:18:45 Lonah Chemtai SALPETER Nagoya (JPN) 13 Mar 2022 1246
- 2:18:46 Birhane DIBABA Valencia (ESP) 01 Dec 2019 1246
- 2:18:47 Catherine NDEREBA Chicago, IL (USA) 07 Oct 2001 1246
- 2:18:51 Alemu MEGERTU Sevilla (ESP) 20 Feb 2022 1245
- 2:18:52 Vivian Jepkemoi CHERUIYOT Valencia (ESP) 01 Dec 2019 1245
- 2:18:54 Lonah Chemtai SALPETER London (GBR) 03 Oct 2021 1245
- 2:18:55 Tirunesh DIBABA Berlin (GER) 16 Sep 2018 1244
- 2:18:56 Paula RADCLIFFE London (GBR) 14 Apr 2002 1244
- 2:18:58 Tiki GELANA Rotterdam (NED) 15 Apr 2012 1244
- 2:18:58 Brigid KOSGEI London (GBR) 04 Oct 2020 1244
- 2:19:10 Valary JEMELI Frankfurt (GER) 27 Oct 2019 1242
- 2:19:10 Hiwot GEBREKIDAN Tokyo (JPN) 06 Mar 2022 1242
- 2:19:12 Mizuki NOGUCHI Berlin (GER) 25 Sep 2005 1242
- 2:19:12 Keira D'AMATO Houston, TX (USA) 16 Jan 2022 1242
- 2:19:17 Roza DEREJE Dubai (UAE) 26 Jan 2018 1241
- 2:19:19 Irina MIKITENKO Berlin (GER) 28 Sep 2008 1240
- 2:19:19 Mary Jepkosgei KEITANY London (GBR) 17 Apr 2011 1240
- 2:19:25 Gladys CHERONO Berlin (GER) 27 Sep 2015 1239
- 2:19:26 Catherine NDEREBA Chicago, IL (USA) 13 Oct 2002 1239
- 2:19:26 Degitu AZIMERAW Amsterdam (NED) 20 Oct 2019 1239
- 2:19:28 Zeineba YIMER Valencia (ESP) 01 Dec 2019 1239
- 2:19:30 Boru Feyse TADESE Dubai (UAE) 26 Jan 2018 1238
- 2:19:31 Asselefech MEDESSA MERGIA Dubai (UAE) 27 Jan 2012 1238
- 2:19:31 Nancy JELAGAT Valencia (ESP) 05 Dec 2021 1238
- 2:19:34 Lucy Kabuu WANGUI Dubai (UAE) 27 Jan 2012 1238
- 2:19:35 Hiwot GEBREKIDAN Milano (ITA) 16 May 2021 1238
- 2:19:36 Deena KASTOR London (GBR) 23 Apr 2006 1237
- 2:19:36 Yebrgual MELESE Dubai (UAE) 26 Jan 2018 1237
- 2:19:38 Worknesh DEGEFA Dubai (UAE) 24 Jan 2020 1237
- 2:19:39 Yingjie SUN Beijing (CHN) 19 Oct 2003 1237
- 2:19:41 Yoko SHIBUI Berlin (GER) 26 Sep 2004 1237
- 2:19:41 Tirfi TSEGAYE Dubai (UAE) 22 Jan 2016 1237
- 2:19:44 Florence KIPLAGAT Berlin (GER) 25 Sep 2011 1236
- 2:19:46 Naoko TAKAHASHI Berlin (GER) 30 Sep 2001 1236
- 2:19:46 Lonah Chemtai SALPETER Praha (CZE) 05 May 2019 1236
- 2:19:47 Sarah CHEPCHIRCHIR Tokyo (JPN) 26 Feb 2017 1236
- 2:19:48 Judith Jeptum KORIR Paris (FRA) 03 Apr 2022 1235
- 2:19:50 Edna Ngeringwony KIPLAGAT London (GBR) 22 Apr 2012 1235
- 2:19:51 Chunxiu ZHOU Seoul (KOR) 12 Mar 2006 1235
- 2:19:51 Birhane DIBABA Tokyo (JPN) 25 Feb 2018 1235
- 2:19:52 Mare DIBABA Dubai (UAE) 27 Jan 2012 1235
- 2:19:52 Mare DIBABA Xiamen (CHN) 03 Jan 2015 1235
- 2:19:52 Tigist GIRMA Amsterdam (NED) 20 Oct 2019 1235
- 2:19:52 Helalia JOHANNES Valencia (ESP) 06 Dec 2020 1235
- 2:19:53 Worknesh DEGEFA Dubai (UAE) 26 Jan 2018 1234
- 2:19:54 Zeineba YIMER Valencia (ESP) 06 Dec 2020 1234
- 2:19:55 Catherine NDEREBA London (GBR) 13 Apr 2003 1234
- 2:19:56 Degitu AZIMERAW Valencia (ESP) 06 Dec 2020 1234
- 2:19:56 Tigist GIRMA Valencia (ESP) 06 Dec 2020 1234
- 2:19:57 Rita Jeptoo SITIENEI Chicago, IL (USA) 13 Oct 2013 1234
- 2:20:02 Asselefech MEDESSA MERGIA Dubai (UAE) 23 Jan 2015 1233
- 2:20:02 Eunice Chebichii CHUMBA Seoul (KOR) 17 Apr 2022 1233
- 2:20:03 Gladys CHERONO Dubai (UAE) 23 Jan 2015 1233
Half marathon
- 1:02:52 Letesenbet GIDEY ETH Valencia (ESP) 24 Oct 2021 1281
- 1:03:51 Yalemzerf YEHUALAW ETH Valencia (ESP) 24 Oct 2021 1260
- 1:04:02 Ruth CHEPNGETICH KEN Istanbul (TUR) 04 Apr 2021 1256
- 1:04:14 Girmawit GEBRZIHAIR ETH Ras Al Khaimah (UAE) 19 Feb 2022 1251
- 1:04:22 Hellen OBIRI KEN Ras Al Khaimah (UAE) 19 Feb 2022 1248
- 1:04:31 Ababel YESHANEH ETH Ras Al Khaimah (UAE) 21 Feb 2020 1245
- 1:04:36 Sheila Chepkirui KIPROTICH KEN Ras Al Khaimah (UAE) 19 Feb 2022 1243
- 1:04:40 Yalemzerf YEHUALAW ETH Istanbul (TUR) 04 Apr 2021 1242
- 1:04:46 Yalemzerf YEHUALAW ETH New Delhi (IND) 29 Nov 2020 1240
- 1:04:48 Hellen OBIRI KEN Istanbul (TUR) 27 Mar 2022 1239
- 1:04:49 Brigid KOSGEI KEN Ras Al Khaimah (UAE) 21 Feb 2020 1239
- 1:04:51 Joyciline JEPKOSGEI KEN Valencia (ESP) 22 Oct 2017 1238
- 1:04:51 Hellen OBIRI KEN Istanbul (TUR) 04 Apr 2021 1238
- 1:04:52 Joyciline JEPKOSGEI KEN Praha (CZE) 01 Apr 2017 1238
- 1:04:52 Fancy CHEMUTAI KEN Ras Al Khaimah (UAE) 09 Feb 2018 1238
- 1:04:54 Sheila Chepkirui KIPROTICH KEN Valencia (ESP) 24 Oct 2021 1237
- 1:04:55 Mary Jepkosgei KEITANY KEN Ras Al Khaimah (UAE) 09 Feb 2018 1237
- 1:05:02 Sheila Chepkirui KIPROTICH KEN Berlin (GER) 03 Apr 2022 1234
- 1:05:03 Vicoty CHEPNGENO KEN Houston, TX (USA) 16 Jan 2022 1234
- 1:05:04 Joan Chelimo MELLY KEN Praha (CZE) 07 Apr 2018 1233
- 1:05:06 Peres JEPCHIRCHIR KEN Ras Al Khaimah (UAE) 10 Feb 2017 1233
- 1:05:06 Ruth CHEPNGETICH KEN New Delhi (IND) 29 Nov 2020 1233
- 1:05:07 Caroline Chepkoech KIPKIRUI KEN Ras Al Khaimah (UAE) 09 Feb 2018 1232
- 1:05:08 Tsehay GEMECHU ETH København (DEN) 19 Sep 2021 1232
- 1:05:09 Florence KIPLAGAT KEN Barcelona (ESP) 15 Feb 2015 1232
- 1:05:09 Joan Chelimo MELLY KEN Istanbul (TUR) 04 Apr 2021 1232
- 1:05:12 Florence KIPLAGAT KEN Barcelona (ESP) 16 Feb 2014 1230
- 1:05:13 Mary Jepkosgei KEITANY KEN Ras Al Khaimah (UAE) 10 Feb 2017 1230
- 1:05:15 Sifan HASSAN NED København (DEN) 16 Sep 2018 1229
- 1:05:16 Peres JEPCHIRCHIR KEN Gdynia (POL) 17 Oct 2020 1229
- 1:05:16 Joyciline JEPKOSGEI KEN Berlin (GER) 22 Aug 2021 1229
- 1:05:18 Melat Yisak KEJETA GER Gdynia (POL) 17 Oct 2020 1228
- 1:05:18 Genzebe DIBABA ETH Valencia (ESP) 06 Dec 2020 1228
- 1:05:19 Yalemzerf YEHUALAW ETH Gdynia (POL) 17 Oct 2020 1228
- 1:05:21 Ababel YESHANEH ETH New Delhi (IND) 29 Nov 2020 1227
- 1:05:21 Nancy JELAGAT KEN Berlin (GER) 22 Aug 2021 1227
- 1:05:22 Violah JEPCHUMBA BRN Praha (CZE) 01 Apr 2017 1227
- 1:05:26 Margaret Chelimo KIPKEMBOI KEN Barcelona (ESP) 03 Apr 2022 1225
- 1:05:28 Brigid KOSGEI KEN Manama (BRN) 15 Mar 2019 1225
- 1:05:28 Judith Jeptum KORIR KEN Ras Al Khaimah (UAE) 19 Feb 2022 1225
- 1:05:30 Ruth CHEPNGETICH KEN Istanbul (TUR) 07 Apr 2019 1224
- 1:05:32 Senbere TEFERI ETH Valencia (ESP) 27 Oct 2019 1223
- 1:05:34 Rosemary WANJIRU KEN Ras Al Khaimah (UAE) 21 Feb 2020 1223
- 1:05:34 Peres JEPCHIRCHIR KEN Praha (CZE) 05 Sep 2020 1223
- 1:05:36 Fancy CHEMUTAI KEN Valencia (ESP) 22 Oct 2017 1222
- 1:05:36 Gotytom GEBRESLASE ETH Manama (BRN) 12 Dec 2021 1222
- 1:05:37 Joan Chelimo MELLY KEN Ras Al Khaimah (UAE) 09 Feb 2018 1222
- 1:05:39 Zeineba YIMER ETH Gdynia (POL) 17 Oct 2020 1221
- 1:05:39 Sheila Chepkirui KIPROTICH KEN Valencia (ESP) 06 Dec 2020 1221
- 1:05:41 Ababel YESHANEH ETH Gdynia (POL) 17 Oct 2020 1220
- 1:05:41 Hawi FEYSA ETH København (DEN) 19 Sep 2021 1220
- 1:05:44 Caroline Chepkoech KIPKIRUI KEN Praha (CZE) 06 Apr 2019 1219
- 1:05:44 Brenda JEPLETING KEN Valencia (ESP) 24 Oct 2021 1219
- 1:05:45 Senbere TEFERI ETH Ras Al Khaimah (UAE) 08 Feb 2019 1219
- 1:05:45 Netsanet GUDETA ETH Ras Al Khaimah (UAE) 08 Feb 2019 1219
- 1:05:45 Sifan HASSAN NED Berlin (GER) 07 Apr 2019 1219
- 1:05:46 Ababel YESHANEH ETH København (DEN) 16 Sep 2018 1218
- 1:05:46 Zeineba YIMER ETH Ras Al Khaimah (UAE) 08 Feb 2019 1218
- 1:05:46 Betty Wilson LEMPUS KEN Paris (FRA) 05 Sep 2021 1218
- 1:05:46 Bosena MULATE ETH Ras Al Khaimah (UAE) 19 Feb 2022 1218
- 1:05:47 Kalkidan GEZAHEGNE BRN Manama (BRN) 12 Dec 2021 1218
- 1:05:50 Mary Jepkosgei KEITANY KEN Ras Al Khaimah (UAE) 18 Feb 2011 1217
- 1:05:50 Brigid KOSGEI KEN Houston, TX (USA) 20 Jan 2019 1217
- 1:05:50 Joyce Chepkemoi TELE KEN Berlin (GER) 03 Apr 2022 1217
- 1:05:51 Violah JEPCHUMBA KEN Praha (CZE) 02 Apr 2016 1217
- 1:05:51 Senbere TEFERI ETH Valencia (ESP) 06 Dec 2020 1217
- 1:05:52 Edith CHELIMO KEN Cardiff (GBR) 01 Oct 2017 1216
- 1:05:52 Tsehay GEMECHU ETH Istanbul (TUR) 27 Mar 2022 1216