Sixth at the IAU 100 km World Championships
Finished sixth in the women’s championship in Bengaluru with a time of 7:37:15.
Source-checked athlete record · Updated Oct 12, 2026
Dominika Stelmach
Polish 100 km record holder and W40 12-hour world record holder
Dominika Stelmach holds Poland’s 100 km record and the IAU W40 six- and 12-hour world records, with major championship results from 50 km to 100 km.
PolandWarsaw, PolandEntre.Pl TeamW40–44
The record so far
Dominika Stelmach is a Polish road, track, and trail ultrarunner from Warsaw. Her international results extend from 50-kilometer championships to Comrades, Western States, 24-hour competition, and long mountain races.
Stelmach ran 7:04:36 for 100 kilometers at UltraPark Weekend in 2020, a mark that remains the Polish women’s record. In 2023 she covered 152.633 kilometers in 12 hours at Spartanion; the performance is the current IAU W40 world record, and her 82.86-kilometer six-hour split from the same race is the current W40 six-hour record.
Her championship record includes bronze at the 2022 IAU 50 km European Championships and sixth place at the 2024 IAU 100 km World Championships, and she finished second among women at the 2022 Comrades Marathon. In 2026 she placed sixth at the IAU 50 km World Championships, won the 50 km di Romagna in 3:20:36, and retained her Ultravasan 90 title in August.
Defining performances
↗
IAU W40 six- and 12-hour world records
Covered 152.633 kilometers in 12 hours at Spartanion after passing six hours at 82.86 kilometers; IAU lists both as current W40 records.
IAU 50 km European bronze medalist
Placed third among women in 3:21:50 at the European Championships.
Comrades Marathon runner-up
Finished second among women in the Down Run in 6:25:08.
Polish 100 km record
Won the national championship in 7:04:36, setting the standing Polish women’s record.
Performance history
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| Ultravasan 9092 km trail | 7:07:17 | 1st woman | View ↗ | |
| Gauja Trail by UTMB45 km trail | 4:38:56 | 1st woman | View ↗ | |
| 50 km di Romagna50 km road | 3:20:36 | 1st woman | View ↗ | |
| IAU 50 km World Championships50 km road | 3:22:03 | 6th woman | View ↗ | |
| Ultravasan 9092 km trail | 6:54:59 | 1st woman | View ↗ | |
| Comrades Marathon — Down Run89.98 km road | 6:12:02 | 5th woman | View ↗ | |
| IAU 100 km World Championships100 km road | 7:37:15 | 6th woman | View ↗ | |
| Spartanion12-hour track split | 152.633 km | IAU W40 world record | View ↗ | |
| IAU 50 km European Championships50 km road | 3:21:50 | 3rd woman · European bronze | View ↗ | |
| Comrades Marathon — Down Run90 km road | 6:25:08 | 2nd woman | View ↗ | |
| UltraPark Weekend100 km road | 7:04:36 | 1st woman · Polish record | View ↗ |
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