Guinness six-day world record
Covered a ratified 928.577 km over six days in Aabybro, Denmark.
Source-checked athlete record · Updated Sep 14, 2026
Stine Rex
Guinness six-day record holder and 48-hour world champion
Stine Rex is a Danish fixed-time ultrarunner recognized by Guinness World Records for 928.577 km in six days and a former 48-hour world-best performance.
DenmarkW45–49
The record so far
Stine Rex is a Danish fixed-time and road ultrarunner. Guinness World Records recognizes her 928.577 km performance in Aabybro in September 2025 as the women’s six-day track record.
Her record also includes 435.564 km at the 2024 GOMU 48-Hour World Championship, which won the women’s title and set the world best at the time. In 2026 she moved back to point-to-point competition and won the 230 km TorTour de Ruhr outright in 26:38:05.
Published measurements for her 2025 six-day race differ slightly: DUV’s event table lists 930.006 km, while the ratified Guinness figure is 928.577 km. This profile uses the Guinness distance for record references.
The two bodies label the mark differently: Guinness World Records ratified it as a world record, while the IAU lists six-day distances as world-best performances rather than ratified world records. The IAU records table carries Rex’s 928.577 km as the current women’s six-day world-best performance, ahead of Camille Herron’s 901.768 km from 2024.
Defining performances
Performance history
| Date | Event | Performance | Result | Source |
|---|---|---|---|---|
| TorTour de Ruhr230 km road | 26:38:05 | 1st overall | View ↗ | |
| GOMU 48-Hour World Championship48-hour road | 211.400 km | Finisher | View ↗ | |
| We Run 6 DaysSix-day track | 928.577 km | Guinness world record | View ↗ | |
| GOMU 48-Hour World Championship48-hour road | 406.458 km | 2nd woman | View ↗ | |
| We Run 6 DaysSix-day track | 913.606 km | 1st overall | View ↗ | |
| GOMU 48-Hour World Championship48-hour road | 435.564 km | 1st woman · 3rd overall | View ↗ |
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