Following our previous publication regarding IAU World Records, IAU is seeking to compile a list of 50 mile Best Performances for all age groups that will be starting point to prepare final list of 50 miles record and best performances. We are publishing proposed list and open for consultations (please see table below). If there are any performances that required correction in the table below please come back to the IAU Records Committee no later than 30th November 2021. The next step will be the verification that will take place in December 2021 and final list will be published as of January 2022. As mentioned please send any required corrections to records@iau-ultramarathon.org
| Women | ||||||
| Category | Performance | Road/Split/Track | Athlete | Country | Date of Event | Location of Event |
| WU20 | 6:17:12 | Split-Track | Bychkova, Marina | RUS | 28.09.1996 | Nantes (FRA) |
| Wopen | 5:40:18 | Road | Trason, Ann | USA | 23.02.1991 | Houston, TX (USA) |
| W35 | 5:55:41 | Split-Track | Liakhova, Valentina | RUS | 28.09.1996 | Nantes (FRA) |
| W40 | 6:09:04 | Road | Boller, Caroline | USA | 07.04.2017 | Madison, WI (USA) |
| W45 | 6:09:09 | Road | Kiddy, Sandra | USA | 01.04.1984 | Columbus, OH (USA) |
| W50 | 6:18:38 | Road | Anderson-Abbs, Beverley | USA | 07.02.2015 | Sacramento, CA (USA) |
| W55 | 6:31:34 | Road | Anderson-Abbs, Beverley | USA | 01.02.2020 | Sacramento, CA (USA) |
| W60 | 7:32:44 | Track | Young, Shirley | AUS | 21.06.1992 | Burwood, VIC (AUS) |
| W65 | 7:55:08 | Track | Young, Shirley | AUS | 29.07.1995 | Burwood, VIC (AUS) |
| W70 | 8:14:12 | Track | Young, Shirley | AUS | 13.05.2000 | Burwood, VIC (AUS) |
| W75 | 11:42:37* | Split-Track | Klein, Helen | USA | 20.07.2002 | San Mateo, CA (USA) |
| Men | ||||||
| Category | Performance | Road/Split/Track | Athlete | Country | Date of Event | Location of Event |
| MU20 | 5:30:42 | Road | Cortez, Jose | USA | 18.10.1970 | Rocklin, CA (USA) |
| Mopen | 4:50:08 | Split-Road | Walmsley, Jim | USA | 04.05.2019 | Sacramento, CA (USA) |
| M35 | 4:51:49 | Track | Ritchie, Donald A. | GBR | 12.03.1983 | Hendon, Barnet, London (GBR) |
| M40 | 5:14:54 | Road | Müller, Fritz | GER | 03.11.1979 | New York, NY (USA) |
| M45 | 5:33:26 | Split-Road | Buquet, Christophe | FRA | 20.06.2009 | Torhout (BEL) |
| M50 | 5:35:03 | Road | Corbett, Ted | USA | 18.10.1970 | New Yory, NY (USA) |
| M55 | 5:24:00 | Split-Road | de Oliveira, Marcio | BRA | 20.06.2009 | Torhout (BEL) |
| M60 | 6:17:24 | Track | Richtman, Mark | USA | 25.02.2017 | Riverbank, CA (USA) |
| M65 | 7:20:01 | Track | Piva, Ray | USA | 08.03.1991 | Hayward, CA (USA) |
| M70 | 7:43:28 | Track | Hughes, Randall | AUS | 29.07.1995 | Burwood, VIC (AUS) |
| M75 | 8:34:28 | Split-Road | Piva, Ray | USA | 20.04.2002 | San Francisco, CA (USA) |
| M80 | 10:16:17 | Road | Dodson, William | USA | 18.04.2015 | San Francisco, CA (USA) |
| M85 | 16:51:10 | Road | Bruckert, Eugene | USA | 30.09.2020 | Augusta, NJ (USA) |
Jacek Bedkowski
IAU Director of Communicaiton
on behalf of IAU Records Committee
October 6th 2021
